{"id":20909,"date":"2026-08-10T17:00:17","date_gmt":"2026-08-10T15:00:17","guid":{"rendered":"https:\/\/migflug.com\/?page_id=20909"},"modified":"2026-08-10T17:00:17","modified_gmt":"2026-08-10T15:00:17","slug":"dewoitine-d-520","status":"publish","type":"page","link":"https:\/\/migflug.com\/es\/aircraft\/dewoitine-d-520\/","title":{"rendered":"Dewoitine D.520"},"content":{"rendered":"<div id=\"mfam\">\n<style>html{overflow-x:hidden}body.page-id-20909{overflow-x:hidden}body.page-id-20909 h1.entry-title.main_title{display:none}body.page-id-20909 #sidebar{display:none}body.page-id-20909 #left-area{width:100%!important;float:none;padding:0}body.page-id-20909 #main-content .container::before{display:none!important;background:none!important}body.page-id-20909 #main-content .container{padding-top:0}#mfam{width:100vw;margin-left:calc(50% - 50vw);overflow:hidden;font-family:'Gilroy regular',Helvetica,Arial,sans-serif;color:#0d1117;background:#fff;line-height:1.6}#mfam 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.relgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}#mfam .relcard{border:1px solid #e2e7ee;background:#fff;color:#0d1117}#mfam .relcard img{width:100%;height:190px;object-fit:cover}#mfam .relcard .rc{padding:18px 20px;display:block}#mfam .relcard .rt{font-family:'Gilroy semiBold';font-size:18px;color:#0d1117;display:block;margin-bottom:6px}#mfam .relcard .rd{font-size:14.5px;color:#5a6472;display:block}#mfam .relgrid>p,#mfam .track>p,#mfam .gtrack>p,#mfam .ctacar>p,#mfam .combat>p,#mfam .cards>p{display:contents}#mfam .srcgrid{display:grid;grid-template-columns:1fr 1fr;gap:12px 34px}#mfam .srcitem{border-bottom:1px solid #eef1f5;padding:11px 0;font-size:15.5px}#mfam .srcitem b{font-family:'Gilroy semiBold';font-weight:600;color:#0d1117}#mfam .srcitem span{color:#5a6472}#mfam .fnote{font-size:13.5px;color:#8892a0;margin-top:26px}@media(max-width:880px){#mfam .cards,#mfam .combat,#mfam .relgrid,#mfam .twocol{grid-template-columns:1fr}#mfam .hero h1{font-size:40px}#mfam .hero{min-height:66vh}#mfam .sec2h,#mfam .sec>.wrap>h2{font-size:26px}#mfam .claim{font-size:18px}#mfam .gd-body{padding-left:0}}<\/style>\n<div class=\"hero\"><img data-opt-id=1747049288  data-opt-src=\"https:\/\/ml5psubhxdln.i.optimole.com\/cb:78--.b845\/w:1536\/h:872\/q:96\/f:best\/https:\/\/migflug.com\/wp-content\/uploads\/2026\/08\/dewoitine-d-520-fighter-gc-iii-6.jpg\"  decoding=\"async\" class=\"hero-img\" src=\"data:image/svg+xml,%3Csvg%20viewBox%3D%220%200%201536%20872%22%20width%3D%221536%22%20height%3D%22872%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Crect%20width%3D%221536%22%20height%3D%22872%22%20fill%3D%22transparent%22%2F%3E%3C%2Fsvg%3E\" alt=\"Dewoitine D.520 fighter in French Arm\u00e9e de l'Air markings\"><\/p>\n<div class=\"hero-shade\"><\/div>\n<div class=\"hero-inner\">\n<div class=\"crumb\"><a href=\"https:\/\/migflug.com\/aircraft\/\">Aircraft Museum<\/a> \/ Dewoitine D.520<\/div>\n<h1>Dewoitine D.520<\/h1>\n<p class=\"claim\">France&#8217;s best fighter of 1940 \u2014 fast, agile and cannon-armed. It arrived too late and in too few numbers to save the country, yet its pilots proved it could stand toe-to-toe with the Messerschmitt Bf 109.<\/p>\n<div class=\"stripe\">\n<div class=\"stat\"><b>~535 km\/h<\/b><span>Top speed<\/span><\/div>\n<div class=\"stat\"><b>1 \u00d7 20 mm<\/b><span>Hub cannon + 4 MGs<\/span><\/div>\n<div class=\"stat\"><b>~900<\/b><span>Built (all users)<\/span><\/div>\n<div class=\"stat\"><b>1940<\/b><span>Combat debut<\/span><\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"sec\">\n<div class=\"wrap\">\n<div class=\"chips\"><span class=\"chip\"><b>Role:<\/b> Single-seat fighter<\/span><span class=\"chip\"><b>Era:<\/b> WWII (1940\u201345)<\/span><span class=\"chip\"><b>Engine:<\/b> Hispano-Suiza 12Y V-12<\/span><span class=\"chip\"><b>Origin:<\/b> France<\/span><span class=\"chip\"><b>Status:<\/b> Retired 1953 \u2014 museum survivors<\/span><span class=\"chip fly\"><a href=\"#faq\">Can you fly a D.520 today?<\/a><\/span><\/div>\n<\/div>\n<\/div>\n<div class=\"sec\">\n<div class=\"wrap\">\n<p class=\"kicker\">Key facts<\/p>\n<h2>Dewoitine D.520: the numbers at a glance<\/h2>\n<div class=\"combat\">\n<div class=\"cstat\"><span>2 Oct 1938<\/span><span>First flight of the D.520-01 prototype<\/span><\/div>\n<div class=\"cstat\"><span>~900<\/span><span>Total built for all operators (sources vary)<\/span><\/div>\n<div class=\"cstat\"><span>1 groupe<\/span><span>Fully operational on 10 May 1940<\/span><\/div>\n<div class=\"cstat\"><span>~100+<\/span><span>Confirmed victories in the Battle of France<\/span><\/div>\n<div class=\"cstat\"><span>5 air forces<\/span><span>France, Germany, Italy, Bulgaria and Vichy France flew it<\/span><\/div>\n<div class=\"cstat\"><span>30 Sep 1953<\/span><span>Last flight in French military service<\/span><\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"sec\">\n<div class=\"wrap\">\n<p class=\"kicker\">The story<\/p>\n<h2>The Dewoitine D.520: the fighter that was good enough \u2014 and late enough to prove it<\/h2>\n<p class=\"lead\">By the spring of 1940 the French Arm\u00e9e de l&#8217;Air had a fighter that could genuinely trade blows with the Luftwaffe&#8217;s Bf 109. The problem was simple and unforgiving: there were almost none of them, and they had arrived almost too late to matter.<\/p>\n<p>The Dewoitine D.520 grew out of the same hard lesson every air force learned in the mid-1930s \u2014 that the biplane era was over and that the future belonged to fast, all-metal, cannon-armed monoplanes. France&#8217;s front-line fighter in 1939, the Morane-Saulnier MS.406, was rugged and available in numbers but simply too slow and too lightly built to live with the latest German designs. \u00c9mile Dewoitine&#8217;s design bureau set out to fix that with a private venture: a compact, low-drag interceptor built around the excellent Hispano-Suiza 12Y engine and, crucially, around a cannon that fired through the propeller hub.<\/p>\n<p>The result first flew on 2 October 1938. Early testing was troubled \u2014 the prototype was underpowered and its cooling was marginal \u2014 but as the engine matured and the airframe was refined, the D.520 turned into something special. It was roughly 100 km\/h faster than the MS.406, it climbed and dived hard, and above all it was pleasant and honest to fly, forgiving enough that ordinary squadron pilots \u2014 not just test pilots \u2014 could fight in it effectively.<\/p>\n<p>Here honesty matters more than legend. The D.520 was <em>not<\/em> a war-winner and it did not &#8220;nearly beat&#8221; the Luftwaffe. When the German offensive opened on 10 May 1940, only a single groupe de chasse, GC I\/3, was fully equipped and operational. Production had barely begun to flow; hundreds of airframes existed on paper or in various states of completion, but only a trickle had reached front-line units. The Battle of France was decided by numbers, doctrine and the collapse of the ground campaign \u2014 not by the qualities of one late-arriving fighter.<\/p>\n<p>What the D.520 <em>did<\/em> do was prove a point. In the six weeks of fighting its handful of squadrons claimed on the order of a hundred confirmed victories, including Bf 109s and Bf 110s, for a comparable number of their own aircraft lost. Those figures are wartime claims and should be read with the usual caution \u2014 air-combat claims across all air forces of the period were routinely optimistic \u2014 but the trend is clear enough: in the right hands the D.520 was competitive, and German pilots who met it took it seriously.<\/p>\n<p>It is worth being concrete about what &#8220;competitive&#8221; meant in practice, because the word can flatter or damn depending on how it is used. The D.520 could not simply be bounced and shot down at will the way the older French and Belgian fighters often were; a German pilot who engaged one carelessly could find himself out-turned and facing an accurate cannon. Equally, the D.520 could not dictate the fight to a well-flown Bf 109E climbing and diving on its own terms. It sat, in other words, in the narrow band where the outcome genuinely depended on the pilots \u2014 and for a French fighter in 1940, arriving in that band at all was an achievement, even if the war around it left little room to enjoy it.<\/p>\n<p>Then came the part of the story that is genuinely uncomfortable. After the June 1940 armistice, production of the D.520 did not stop \u2014 it continued under German oversight, and the type became the principal fighter of Vichy France. In that service it was turned, at times, against the Allies: over Syria in 1941 and over North Africa in 1942, French pilots in French fighters fought British and American aircraft. The same aeroplane was later flown by the Luftwaffe as a trainer, by Italy, and by Bulgaria against American bombers. It is a tangled, awkward legacy, and it is part of why the D.520 is remembered more as a &#8220;what if&#8221; than as a hero.<\/p>\n<p>None of this was the aircraft&#8217;s doing, of course \u2014 machines have no politics \u2014 but it shapes how the D.520 is remembered, and it should. A responsible museum does not airbrush the awkward parts. The same fighter that briefly gave France a fighting chance in the air also became, through the accidents of defeat and occupation, a tool of Vichy and then of the Axis. Holding both truths together is the only honest way to tell its story, and it is the way we tell it here.<\/p>\n<div class=\"pull\">&#8220;The best fighter engaged by the French in the Second World War.&#8221; \u2014 Mus\u00e9e de l&#8217;Air et de l&#8217;Espace, on its own D.520<\/div>\n<p>Strip away the might-have-beens and a fair verdict remains. The D.520 was the most capable fighter France fielded in 1940: quick, agile, well-armed and well-liked by its pilots. It supplemented and outclassed the MS.406 it was meant to replace, and it gave France&#8217;s fighter arm a machine that could, aircraft for aircraft, meet the Bf 109E on something close to even terms. It simply came too late, in numbers too small, to change history \u2014 a first-rate fighter handed a losing hand.<\/p>\n<p>It is worth pausing on that phrase, because it is the whole argument in miniature. The D.520 was not undone by a design flaw, a fatal vice or a failure of courage. It was undone by the calendar and the production line. Had the same aircraft, in the same quality, existed in the numbers France reached only in 1941 and 1942 \u2014 by which point it was building D.520s for its conquerors \u2014 the air fighting of May 1940 would have looked very different, even if the campaign on the ground had still been lost. That is the peculiar melancholy of the type: everything about the machine was right except the two things a machine cannot control, which are how many of it exist and when.<\/p>\n<p>For a museum, that makes the D.520 unusually instructive. It is easy to celebrate the war-winners \u2014 the Spitfire, the Mustang, the Bf 109 in its pomp. It is more useful, and more honest, to sit with an aircraft that did almost everything right and still could not alter the outcome, because it reveals how much of air power lives outside the cockpit: in factories, in timetables, in the slow business of turning a good drawing into a squadron ready to fight.<\/p>\n<div class=\"gd\">\n<details>\n<summary><span class=\"num\">01<\/span><span class=\"gt\">The Dewoitine D.520&#8217;s origins: how France answered the Bf 109<\/span><span class=\"pm\">+<\/span><\/summary>\n<div class=\"gd-body\">\n<p>The D.520 was the end of a family line. Dewoitine&#8217;s earlier D.500 series of open-cockpit monoplane fighters had modernised French fighter thinking in the early 1930s, and the D.510 introduced the engine-mounted cannon that would define French fighter armament. But those aircraft were fixed-gear and already obsolescent when the Bf 109 and Hawker Hurricane appeared. The MS.406 that entered service in 1938 was a stopgap: France&#8217;s most numerous fighter in 1940, but with a top speed under 490 km\/h it was outclassed.<\/p>\n<p>Dewoitine&#8217;s team \u2014 by then absorbed into the nationalised SNCAM \u2014 pitched an all-new interceptor to a demanding 1936 requirement calling for 500 km\/h. The first D.520 fell short and needed extensive rework: a bigger tail, a refined wing, better cooling and a more powerful engine. Only after those changes did the aircraft meet, then exceed, the specification, clearing the way for large production orders placed in 1938\u201339. The irony of the programme is that the redesign that made the D.520 good also delayed it \u2014 which is exactly why so few were ready when the storm broke.<\/p>\n<\/div>\n<\/details>\n<\/div>\n<div class=\"gd\">\n<details>\n<summary><span class=\"num\">02<\/span><span class=\"gt\">The Dewoitine D.520&#8217;s production catastrophe: why the factories couldn&#8217;t keep up<\/span><span class=\"pm\">+<\/span><\/summary>\n<div class=\"gd-body\">\n<p>Numbers tell the story better than adjectives. France ordered the D.520 in quantity \u2014 successive contracts eventually ran to well over a thousand aircraft \u2014 but ordering and delivering are very different things. The first production machine did not fly until late 1939, and through the winter of 1939\u201340 the trickle out of the factories was agonisingly slow: a handful a month, then a few dozen, against a Luftwaffe that already counted its Bf 109s in the thousands.<\/p>\n<p>Several things conspired against the programme. The airframe&#8217;s redesign had eaten most of 1939. The Hispano-Suiza engine and its hub cannon were in demand for several aircraft at once. French aircraft production was fragmented across newly nationalised firms still learning to mass-produce. And crucially, even completed airframes needed acceptance flights, gun harmonisation and delivery to units that then had to convert their pilots \u2014 weeks of work for each aeroplane before it could fight.<\/p>\n<p>The result was the cruel arithmetic of 1940: by the time Germany attacked, perhaps a few hundred D.520s had been built but only a single groupe was genuinely combat-ready, with others still converting on a mix of types. Production actually peaked <em>after<\/em> the armistice, under Vichy and German direction \u2014 which is the bitterest fact of all. France finally built the D.520 in numbers only once it had lost the war in which those numbers might have counted.<\/p>\n<\/div>\n<\/details>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"sec\">\n<div class=\"wrap\">\n<p class=\"kicker\">Design &#038; engineering<\/p>\n<h2>How the Dewoitine D.520 was built to fight<\/h2>\n<p class=\"lead\">A small, clean airframe wrapped around a proven engine and a hub-firing cannon \u2014 the D.520&#8217;s design choices were conservative, sensible and, for France in 1940, exactly right.<\/p>\n<p>There was nothing revolutionary about the D.520, and that was its strength. Where some contemporaries chased novelty, Dewoitine&#8217;s team took proven ingredients \u2014 a mature engine, a well-understood cannon, orthodox stressed-metal construction \u2014 and integrated them cleanly into a small, low-drag airframe. The genius, such as it was, lay not in any single breakthrough but in balance: enough speed, enough agility, enough firepower and enough toughness, with no glaring weakness beyond the modest power of the engine. In a fighter meant to be built in quantity and flown by ordinary squadron pilots, that balance mattered far more than any clever gimmick.<\/p>\n<div class=\"cards\">\n<div class=\"card\">\n<div class=\"n\">01<\/div>\n<h3>The moteur-canon: a cannon through the hub<\/h3>\n<p>The D.520&#8217;s signature weapon was a single 20 mm Hispano-Suiza HS.404 cannon mounted between the engine cylinder banks and firing through the hollow propeller shaft. Firing along the aircraft&#8217;s centreline, above the propeller disc, meant no synchronisation losses and pinpoint aim \u2014 a heavy, accurate punch that most contemporaries lacked.<\/p>\n<\/div>\n<div class=\"card\">\n<div class=\"n\">02<\/div>\n<h3>A clean airframe around the Hispano-Suiza 12Y<\/h3>\n<p>Power came from a liquid-cooled Hispano-Suiza 12Y V-12 of roughly 850\u2013920 hp. It was not the most powerful engine of its generation, so Dewoitine&#8217;s team chased speed through low drag: a compact, well-faired fuselage, a thin wing and a tightly cowled radiator under the belly.<\/p>\n<\/div>\n<div class=\"card\">\n<div class=\"n\">03<\/div>\n<h3>Agile, honest and pilot-friendly<\/h3>\n<p>Pilots consistently praised the D.520&#8217;s handling. It turned well, dived hard and warned the pilot before it stalled \u2014 forgiving qualities that let squadron pilots, not just aces, use it aggressively. That temperament, as much as its speed, is why it earned its reputation.<\/p>\n<\/div>\n<\/div>\n<figure><img data-opt-id=169584994  data-opt-src=\"https:\/\/ml5psubhxdln.i.optimole.com\/cb:78--.b845\/w:1452\/h:1080\/q:96\/f:best\/https:\/\/migflug.com\/wp-content\/uploads\/2026\/08\/dewoitine-d-520-musee-air-espace-detail.jpg\"  decoding=\"async\" src=\"data:image/svg+xml,%3Csvg%20viewBox%3D%220%200%201536%201142%22%20width%3D%221536%22%20height%3D%221142%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Crect%20width%3D%221536%22%20height%3D%221142%22%20fill%3D%22transparent%22%2F%3E%3C%2Fsvg%3E\" alt=\"Dewoitine D.520 preserved at the Mus\u00e9e de l'Air et de l'Espace\"><figcaption>The preserved D.520 at the Mus\u00e9e de l\u2019Air et de l\u2019Espace, Le Bourget. Photo: G.Garitan (Wikimedia Commons, CC BY-SA 4.0).<\/figcaption><\/figure>\n<div class=\"gd\">\n<details>\n<summary><span class=\"num\">03<\/span><span class=\"gt\">The Dewoitine D.520&#8217;s engine: the Hispano-Suiza 12Y that made it possible<\/span><span class=\"pm\">+<\/span><\/summary>\n<div class=\"gd-body\">\n<p>Everything about the D.520 was shaped by its engine. The Hispano-Suiza 12Y was a liquid-cooled, 36-litre V-12 that had been developed through the 1930s and licensed around the world \u2014 versions powered Soviet, Swiss and other fighters. In the D.520 it appeared as the 12Y-45 and, later, the more powerful 12Y-49, giving somewhere in the region of 850 to 920 horsepower depending on variant and boost.<\/p>\n<p>That was <em>less<\/em> power than the Rolls-Royce Merlin or the Daimler-Benz DB 601 that drove the Spitfire and Bf 109, and it is the single biggest reason the D.520 could not simply outclass its rivals. Dewoitine&#8217;s engineers compensated with drag reduction and light weight, wringing a competitive top speed out of a modest engine. But the 12Y had one priceless feature the others could match only awkwardly: it was designed from the outset to carry a cannon in the vee between its cylinder banks, firing through a hollow propeller shaft. That single design choice defined French fighter firepower for a decade.<\/p>\n<p>The engine was not without vices \u2014 the early cooling problems that plagued the prototype were a constant preoccupation, and the 12Y was reaching the end of its development potential by 1940. The much more powerful engines that might have kept the airframe competitive arrived only late in the war, long after events had overtaken the D.520.<\/p>\n<p>The engine also explains one of the aircraft&#8217;s quieter virtues: reliability. The 12Y was a known quantity, in service and in licence production for years, with its foibles well understood by the mechanics who maintained it. For a fighter thrown into a chaotic campaign and operated from improvised fields, that maturity mattered \u2014 a brilliant but temperamental powerplant would have been worse than a merely adequate one that started every morning and got its pilot home. In choosing the 12Y, Dewoitine&#8217;s team traded ultimate performance for dependability, and in the circumstances of 1940 it was very likely the right trade.<\/p>\n<\/div>\n<\/details>\n<\/div>\n<div class=\"gd\">\n<details>\n<summary><span class=\"num\">04<\/span><span class=\"gt\">The Dewoitine D.520&#8217;s guns: the moteur-canon and four rifle-calibre MGs<\/span><span class=\"pm\">+<\/span><\/summary>\n<div class=\"gd-body\">\n<p>The D.520&#8217;s armament was a deliberate French speciality. Its main weapon was a single 20 mm Hispano-Suiza HS.404 automatic cannon \u2014 one of the finest aircraft guns of the war, later adopted by the British and Americans \u2014 mounted as a <em>moteur-canon<\/em> between the cylinder banks and firing through the propeller hub. Because it sat on the aircraft&#8217;s centreline and needed no interrupter gear, it was both accurate and free of synchronisation losses, and a single 20 mm hit could be decisive.<\/p>\n<p>Backing it were four 7.5 mm MAC 1934 machine guns buried in the wings, two per side. Here the design showed its age: rifle-calibre machine guns were already marginal against armoured, self-sealing opponents, and the D.520&#8217;s four were fewer and lighter than the eight .303s of a Hurricane or Spitfire. The cannon carried the punch; the machine guns were there to help the pilot walk his fire onto the target.<\/p>\n<p>The trade-off was ammunition. The hub cannon carried only about sixty rounds \u2014 a few seconds of fire \u2014 so D.520 pilots had to shoot with discipline, holding until the shot was certain. In practice the combination worked well: an accurate centreline cannon suited the fast, fleeting firing passes that fighter combat in 1940 demanded.<\/p>\n<p>The HS.404 itself deserves a mention beyond its role in the D.520, because it was one of the great weapons of the war. Reliable, hard-hitting and adaptable, it was taken up by the British as the Hispano cannon and by the Americans in turn, arming Spitfires, Typhoons, Mosquitoes and countless others through 1945 and long after. In that sense the D.520 shared its gun with the very Allies it would later, under Vichy, be turned against \u2014 a small irony to set beside the larger ones, and a reminder that the D.520 was assembled from some of the best components its generation had to offer.<\/p>\n<\/div>\n<\/details>\n<\/div>\n<div class=\"gd\">\n<details>\n<summary><span class=\"num\">05<\/span><span class=\"gt\">The Dewoitine D.520&#8217;s structure and systems: metal, guns and fuel<\/span><span class=\"pm\">+<\/span><\/summary>\n<div class=\"gd-body\">\n<p>The D.520 was an all-metal, stressed-skin monoplane with a low cantilever wing and a wide-track, inward-retracting undercarriage that made it steady on rough grass airfields. The wing housed four 7.5 mm MAC 1934 machine guns \u2014 two in each side \u2014 supplementing the hub cannon, along with self-sealing fuel tanks that gave it useful combat endurance and a measure of battle-damage tolerance that many earlier French fighters lacked.<\/p>\n<p>The cockpit sat well aft under a framed sliding canopy, giving a reasonable view for the era. Armour behind the pilot&#8217;s seat and a bullet-resistant windscreen reflected the hard lessons of Spain and the expectation of a cannon-versus-cannon war. None of this was revolutionary \u2014 but it was competent, modern and, importantly, robust enough to survive contact with the enemy.<\/p>\n<p>That robustness had a practical dividend that rarely reaches the specification sheets. The D.520 could be flown hard, belly-landed, patched up and sent out again \u2014 qualities that kept squadrons in the fight as their airfields were bombed and their maintenance disrupted by the German advance. An elegant fighter that shatters at the first rough landing is little use in a rout; the D.520&#8217;s sturdy, wide-track undercarriage and honest structure made it a survivor in the most literal sense, and helped it soldier on into a second and third career long after 1940.<\/p>\n<\/div>\n<\/details>\n<\/div>\n<div class=\"gd\">\n<details>\n<summary><span class=\"num\">06<\/span><span class=\"gt\">The Dewoitine D.520 versus the Bf 109E: an honest comparison<\/span><span class=\"pm\">+<\/span><\/summary>\n<div class=\"gd-body\">\n<p>Against the Messerschmitt Bf 109E \u2014 the Luftwaffe&#8217;s front-line fighter in 1940 \u2014 the D.520 gave away a little in level and climbing speed but answered with a tighter turn and, many pilots felt, friendlier handling near the limit. Its centreline cannon was accurate; the Bf 109E&#8217;s wing- or hub-mounted cannon and cowl guns hit harder in a snap burst but demanded good deflection shooting.<\/p>\n<p>The fair summary is parity, not superiority: a well-flown D.520 could meet a well-flown Bf 109E on close to even terms, with the outcome usually decided by numbers, height and tactics rather than by the machines. That is a genuine compliment to a French fighter of 1940 \u2014 and a reminder that being &#8220;as good as&#8221; the enemy is not the same as being able to beat an air force several times your size.<\/p>\n<\/div>\n<\/details>\n<\/div>\n<div class=\"gd\">\n<details>\n<summary><span class=\"num\">07<\/span><span class=\"gt\">The Dewoitine D.520 versus the MS.406: France&#8217;s own generational leap<\/span><span class=\"pm\">+<\/span><\/summary>\n<div class=\"gd-body\">\n<p>To understand why the D.520 mattered, compare it not with its enemies but with the fighter it was meant to replace. The Morane-Saulnier MS.406 was France&#8217;s most numerous fighter in 1940 \u2014 sturdy, docile and available in real numbers \u2014 but it was already a generation behind. Its top speed struggled to reach 490 km\/h, its construction was partly of bonded plywood and light alloy, and its single 20 mm cannon was fed from a small drum. Against the Bf 109E it was simply outmatched, and its squadrons suffered for it.<\/p>\n<p>The D.520 fixed almost every one of the MS.406&#8217;s shortcomings. It was around 45 to 50 km\/h faster, all-metal and more robust, better armed and fed, and it climbed and dived far more convincingly. Pilots who converted from the Morane to the Dewoitine described it as moving up a weight class \u2014 the difference between hanging on and fighting back.<\/p>\n<p>That is the fairest frame for the whole D.520 story. It was not a miracle weapon that could beat the Luftwaffe single-handed; it was the aircraft that finally brought French fighter design level with the best in the world. The tragedy is only that France completed that leap a year or two too late to matter.<\/p>\n<\/div>\n<\/details>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"sec\">\n<div class=\"wrap\">\n<p class=\"kicker\">Specifications<\/p>\n<h2>Dewoitine D.520 \u2014 full specifications<\/h2>\n<p class=\"lead\">Figures are for the main production D.520 and are rounded; where wartime sources disagree, the common range is given. Treat all performance and production numbers as period estimates.<\/p>\n<div class=\"twocol\">\n<table class=\"spec\">\n<caption>Airframe &amp; powerplant<\/caption>\n<tbody>\n<tr>\n<th>Type<\/th>\n<td>Single-seat monoplane fighter-interceptor<\/td>\n<\/tr>\n<tr>\n<th>Crew<\/th>\n<td>1<\/td>\n<\/tr>\n<tr>\n<th>Designer<\/th>\n<td>\u00c9mile Dewoitine&#8217;s bureau (SNCAM \/ SNCASE)<\/td>\n<\/tr>\n<tr>\n<th>First flight<\/th>\n<td>2 October 1938 (prototype D.520-01)<\/td>\n<\/tr>\n<tr>\n<th>Service entry<\/th>\n<td>Early 1940; operational May 1940<\/td>\n<\/tr>\n<tr>\n<th>Powerplant<\/th>\n<td>1 \u00d7 Hispano-Suiza 12Y-45 \/ 12Y-49 liquid-cooled V-12<\/td>\n<\/tr>\n<tr>\n<th>Power<\/th>\n<td>~850\u2013920 hp (variant-dependent)<\/td>\n<\/tr>\n<tr>\n<th>Propeller<\/th>\n<td>3-blade constant-speed (Chauvi\u00e8re \/ Ratier)<\/td>\n<\/tr>\n<tr>\n<th>Number built<\/th>\n<td>~900 total \u2014 sources vary (see note)<\/td>\n<\/tr>\n<tr>\n<th>Unit cost<\/th>\n<td>Not reliably recorded (WWII state production)<\/td>\n<\/tr>\n<tr>\n<th>Cost per flight hour<\/th>\n<td>Not reliably recorded (WWII-era)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<table class=\"spec\">\n<caption>Performance &amp; armament<\/caption>\n<tbody>\n<tr>\n<th>Maximum speed<\/th>\n<td>~530\u2013540 km\/h (~330 mph) at ~5,500 m \u2014 commonly cited ~535 km\/h<\/td>\n<\/tr>\n<tr>\n<th>Service ceiling<\/th>\n<td>~10,500\u201311,200 m (~34,500\u201336,700 ft)<\/td>\n<\/tr>\n<tr>\n<th>Range<\/th>\n<td>~1,000\u20131,250 km (~620\u2013780 mi)<\/td>\n<\/tr>\n<tr>\n<th>Rate of climb<\/th>\n<td>~14 m\/s (~2,760 ft\/min)<\/td>\n<\/tr>\n<tr>\n<th>Wingspan<\/th>\n<td>10.20 m (33 ft 5.5 in)<\/td>\n<\/tr>\n<tr>\n<th>Length<\/th>\n<td>8.60 m (28 ft 2 in)<\/td>\n<\/tr>\n<tr>\n<th>Height<\/th>\n<td>2.57 m (8 ft 5 in)<\/td>\n<\/tr>\n<tr>\n<th>Empty weight<\/th>\n<td>~2,090 kg (4,610 lb)<\/td>\n<\/tr>\n<tr>\n<th>Loaded weight<\/th>\n<td>~2,680 kg (5,900 lb)<\/td>\n<\/tr>\n<tr>\n<th>Armament<\/th>\n<td>1 \u00d7 20 mm HS.404 hub cannon (60 rds) + 4 \u00d7 7.5 mm MAC 1934 wing MGs<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<div class=\"gd\">\n<details>\n<summary><span class=\"num\">08<\/span><span class=\"gt\">Every major Dewoitine D.520 variant explained<\/span><span class=\"pm\">+<\/span><\/summary>\n<div class=\"gd-body\">\n<p><b>D.520-01 \/ -02 \/ -03<\/b> \u2014 the three prototypes (1938\u201339) that evolved the type from an underpowered disappointment into a front-line fighter through tail, wing, cooling and engine changes.<\/p>\n<p><b>D.520 (production)<\/b> \u2014 the standard 1940 fighter with the 12Y-45 or 12Y-49 engine, the HS.404 hub cannon and four MAC 1934 wing guns. The vast majority of the ~900 airframes were this model.<\/p>\n<p><b>D.520 Vichy \/ continuation batches<\/b> \u2014 aircraft completed after the armistice under German oversight from 1941, mechanically similar to the 1940 machines and used to re-equip Vichy and later Axis units.<\/p>\n<p><b>D.521 \/ D.524<\/b> \u2014 experimental re-engined offshoots (including a Rolls-Royce Merlin trial) that never entered production.<\/p>\n<p><b>D.520Z \/ DZ<\/b> \u2014 a much more powerful late development around a ~1,200\u20131,600 hp engine, conceived to keep the design competitive; it came far too late, first flying only after the war.<\/p>\n<p>The proliferation of sub-types and one-off conversions is itself part of the story. Because the D.520 was built and rebuilt under three different regimes \u2014 the pre-war Republic, Vichy, and the post-war Arm\u00e9e de l&#8217;Air \u2014 individual airframes accumulated modifications, re-engining trials and role changes that make a clean &#8220;mark by mark&#8221; account difficult. For the purposes of this museum the essentials are simple: the overwhelming majority of D.520s were the standard 1940 fighter described above, and the exotic variants, however interesting, were footnotes that never influenced the type&#8217;s combat career.<\/p>\n<\/div>\n<\/details>\n<\/div>\n<div class=\"gd\">\n<details>\n<summary><span class=\"num\">09<\/span><span class=\"gt\">The Dewoitine D.520&#8217;s operating costs: what a 1940 fighter really cost<\/span><span class=\"pm\">+<\/span><\/summary>\n<div class=\"gd-body\">\n<p>Honestly, there is no reliable per-hour operating figure for the D.520, and any precise number you see quoted should be treated with suspicion. It was built by a nationalised, wartime aircraft industry whose accounting was disrupted first by mobilisation and then by defeat and occupation; unit prices were expressed in 1939\u201340 francs under a command economy, and no consistent &#8220;cost per flight hour&#8221; series survives.<\/p>\n<p>What can be said is qualitative. The D.520 was a single-engine, single-seat fighter of modest size, so its fuel burn, crew requirement and maintenance load were broadly in line with contemporaries like the Bf 109E, Hurricane and Spitfire rather than with heavy twins. Its real &#8220;cost&#8221; to France in 1940 was not financial at all \u2014 it was time. Every month of redesign that made the aircraft good was a month France could not spare, and that is the price that mattered.<\/p>\n<p>If a modern comparison helps, think of the D.520 as a sound, mid-market fighter rather than a gold-plated one \u2014 closer in philosophy to the Hurricane than to some of the more exotic and expensive projects of the era. It used a proven engine, orthodox construction and existing weapons precisely so that it could, in theory, be built quickly and cheaply in large numbers. The cruel joke of 1940 is that this sensible, affordable design was defeated not by cost but by time and circumstance: France got the economics right and the calendar catastrophically wrong. When we eventually fold the D.520 into the museum&#8217;s cost-comparison tool, that is the honest place to put it \u2014 an inexpensive fighter whose true price was paid in the currency no budget can show.<\/p>\n<\/div>\n<\/details>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"sec\">\n<div class=\"wrap\">\n<p class=\"kicker\">In the cockpit<\/p>\n<h2>Flying the Dewoitine D.520: handling, cockpit and the pilot&#8217;s view<\/h2>\n<p class=\"lead\">The D.520&#8217;s reputation rests heavily on the way it flew. Pilots did not just respect it \u2014 they liked it, and that affection tells us as much about the aircraft as any data sheet.<\/p>\n<div class=\"cards\">\n<div class=\"card\">\n<div class=\"n\">01<\/div>\n<h3>Honest at the limit<\/h3>\n<p>The D.520 gave clear warning before it stalled and remained controllable when pushed, so pilots could fly it hard in a turning fight without fear of a sudden, fatal departure. In combat that confidence was worth as much as raw performance.<\/p>\n<\/div>\n<div class=\"card\">\n<div class=\"n\">02<\/div>\n<h3>A steady gun platform<\/h3>\n<p>With its wide-track undercarriage on the ground and its smooth handling in the air, the D.520 was stable enough to make the most of its accurate hub cannon \u2014 and forgiving enough of rough front-line airfields to keep operating as the front collapsed.<\/p>\n<\/div>\n<div class=\"card\">\n<div class=\"n\">03<\/div>\n<h3>Fast, but not a rocket<\/h3>\n<p>The modest Hispano-Suiza engine meant the D.520 accelerated and climbed respectably rather than spectacularly. Pilots learned to fight it on its strengths \u2014 the turn, the dive and the gun \u2014 rather than trying to out-sprint a Bf 109 in level flight.<\/p>\n<\/div>\n<\/div>\n<p>Climb into a D.520 and the layout is conventional for its era: a framed sliding canopy, a reasonable view over a long nose, and a cockpit that placed the essentials to hand without fuss. Armour behind the seat and a protected windscreen reflected the expectation of a hard, cannon-armed war, and the self-sealing tanks gave the pilot a fighting chance of getting home after taking hits \u2014 a real advance over earlier French fighters that had tended to burn.<\/p>\n<p>In the air the aircraft rewarded a thinking pilot. It could turn tightly enough to trouble a Bf 109E, dived willingly, and recovered cleanly from the sort of violent manoeuvring that combat demanded. Its weaknesses were the ones dictated by its engine: it could be out-climbed and, in a sustained level chase, out-run by the best German fighters, so its pilots had to fight on their own terms, using height, surprise and the hard punch of the centreline cannon.<\/p>\n<p>Perhaps the highest praise is the simplest: pilots trusted it. Men who had gone to war in the outclassed MS.406 spoke of the D.520 with something close to relief, as an aircraft that finally gave them a fair fight. In the disaster of 1940, that mattered \u2014 and it is a large part of why the D.520 is remembered so fondly for a campaign that ended in defeat.<\/p>\n<p>There is a subtlety here that the raw numbers miss. A fighter that pilots trust is a fighter they fly more aggressively, closer to its limits, more often \u2014 and aggression, in fighter combat, is frequently the difference between the hunter and the hunted. The D.520&#8217;s benign manners were therefore not a mere comfort but a force multiplier: they let ordinary squadron pilots, freshly converted from the docile Morane, extract performance that a twitchier, less forgiving design might have kept locked away behind fear. In the frantic, improvised air battles of 1940, that psychological edge counted for a great deal.<\/p>\n<p>None of this made the D.520 easy to fly well, only honest about it. Like any thoroughbred fighter it demanded skill, judgement and constant attention to its modest fuel and ammunition. But it did not booby-trap its pilots, and in an air force being thrown into battle before it was ready, an aircraft that behaved predictably under stress was worth almost as much as one that was simply fast.<\/p>\n<\/div>\n<\/div>\n<div class=\"sec\">\n<div class=\"wrap\">\n<p class=\"kicker\">In context<\/p>\n<h2>The Dewoitine D.520 among its 1940 contemporaries<\/h2>\n<p class=\"lead\">Set beside the fighters it fought with and against, the D.520 was neither the fastest nor the best-armed of its generation \u2014 but it was solidly in the game, which is exactly the point.<\/p>\n<div class=\"twocol\">\n<table class=\"spec\">\n<caption>Headline figures \u2014 1940 fighter generation (approximate)<\/caption>\n<tbody>\n<tr>\n<th>Dewoitine D.520<\/th>\n<td>~535 km\/h; 1 \u00d7 20 mm hub cannon + 4 \u00d7 7.5 mm MGs; ~900 hp<\/td>\n<\/tr>\n<tr>\n<th>Messerschmitt Bf 109E<\/th>\n<td>~560 km\/h; 2 \u00d7 20 mm + 2 \u00d7 7.9 mm (typical); ~1,100 hp<\/td>\n<\/tr>\n<tr>\n<th>Supermarine Spitfire Mk I<\/th>\n<td>~580 km\/h; 8 \u00d7 7.7 mm MGs; ~1,030 hp<\/td>\n<\/tr>\n<tr>\n<th>Hawker Hurricane Mk I<\/th>\n<td>~520 km\/h; 8 \u00d7 7.7 mm MGs; ~1,030 hp<\/td>\n<\/tr>\n<tr>\n<th>Morane-Saulnier MS.406<\/th>\n<td>~486 km\/h; 1 \u00d7 20 mm + 2 \u00d7 7.5 mm MGs; ~860 hp<\/td>\n<\/tr>\n<tr>\n<th>Macchi C.200 Saetta<\/th>\n<td>~500 km\/h; 2 \u00d7 12.7 mm MGs; ~870 hp<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<table class=\"spec\">\n<caption>What the table shows<\/caption>\n<tbody>\n<tr>\n<th>Speed<\/th>\n<td>Mid-table: faster than the MS.406, Hurricane and C.200, a little slower than the Bf 109E and Spitfire.<\/td>\n<\/tr>\n<tr>\n<th>Firepower<\/th>\n<td>Excellent hitting power for its weight thanks to the accurate hub cannon; heavier single-shot punch than the rifle-calibre British eight-gun batteries, if a lower volume of fire.<\/td>\n<\/tr>\n<tr>\n<th>Power<\/th>\n<td>The weakest engine of the front-line group \u2014 the root cause of its speed and climb deficit.<\/td>\n<\/tr>\n<tr>\n<th>Verdict<\/th>\n<td>Competitive across the board, dominant in none \u2014 a genuinely modern fighter of the 1940 class.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>The honest reading of this comparison is not that the D.520 was the best fighter of 1940 \u2014 it was not \u2014 but that it belonged in the same conversation, which no previous French fighter had. Against the Bf 109E it conceded speed and climb but answered with agility and an accurate cannon; against the British eight-gun fighters it was slower than the Spitfire but broadly a match for the Hurricane, with heavier single-shot punch. Its one clear inferiority was engine power, and almost every one of its shortcomings traces back to that.<\/p>\n<p>What the table cannot show is availability, and that is where the D.520&#8217;s real weakness lay. Britain had hundreds of Spitfires and Hurricanes in service by mid-1940; Germany counted its Bf 109s in thousands. France had one operational groupe of D.520s when the blow fell. A fighter that is competitive on paper but almost absent from the flight line cannot influence a battle \u2014 and that, far more than any performance figure, is why the D.520&#8217;s 1940 is remembered as a tragedy rather than a triumph.<\/p>\n<p>One further point of context deserves making, because it is often lost. The D.520 fought its war against the first-line fighters of 1940 \u2014 the Bf 109E and the Italian biplanes and early monoplanes \u2014 and against those opponents it was genuinely competitive. It never had to face the far deadlier fighters that appeared later: the Bf 109F and G, the Focke-Wulf 190, the late-model Spitfires. Judged against the aircraft it actually met, in the year it actually fought, the D.520 stands up well. Judged against the whole sweep of the war it would soon have been obsolete \u2014 which is simply to say that it was a fighter of 1940, neither ahead of its time nor behind it, but squarely and honourably of it.<\/p>\n<p>Place the D.520 in this museum&#8217;s wider collection and the comparison sharpens further. Set against a first-generation jet, a Cold War interceptor or a modern multirole fighter it is, of course, an antique \u2014 but that is the wrong yardstick. The right one is the aircraft in the cases beside it: the Hurricanes and Spitfires, the Bf 109s and Zeros and Macchis, the piston-engined fighters that decided the great air battles of 1939 to 1945. Among those peers the D.520 holds its place without apology, distinguished less by any single number than by the poignancy of its timing. It is the &#8220;so close&#8221; of the 1940 fighter generation, and that is exactly why it repays a longer look.<\/p>\n<\/div>\n<\/div>\n<div class=\"sec\">\n<div class=\"wrap\">\n<p class=\"kicker\">Timeline<\/p>\n<h2>The Dewoitine D.520: a service record in dates<\/h2>\n<div class=\"tl\">\n<div class=\"row\">\n<div class=\"yr\">1936<\/div>\n<div class=\"ev\">France issues a fighter requirement calling for 500 km\/h; Dewoitine&#8217;s bureau begins a private-venture interceptor around the Hispano-Suiza 12Y and a hub cannon.<\/div>\n<\/div>\n<div class=\"row\">\n<div class=\"yr\">1938<\/div>\n<div class=\"ev\">The D.520-01 prototype makes its first flight on 2 October. Early results are disappointing \u2014 it is underpowered and needs a major redesign.<\/div>\n<\/div>\n<div class=\"row\">\n<div class=\"yr\">1939<\/div>\n<div class=\"ev\">After tail, wing and engine refinements the D.520 exceeds the specification. Large production orders follow, but deliveries are slow to begin.<\/div>\n<\/div>\n<div class=\"row\">\n<div class=\"yr\">Late 1939<\/div>\n<div class=\"ev\">The first production D.520 flies. Through the winter the factories deliver only a trickle of aircraft, far short of what the coming battle will demand.<\/div>\n<\/div>\n<div class=\"row\">\n<div class=\"yr\">Jan\u2013Apr 1940<\/div>\n<div class=\"ev\">The first units convert to the type. Teething troubles and a thin supply of aircraft mean only one groupe, GC I\/3, is truly ready by spring.<\/div>\n<\/div>\n<div class=\"row\">\n<div class=\"yr\">10 May 1940<\/div>\n<div class=\"ev\">Germany invades the West. Just a single fully operational D.520 groupe faces the Luftwaffe; production is still ramping up.<\/div>\n<\/div>\n<div class=\"row\">\n<div class=\"yr\">13 May 1940<\/div>\n<div class=\"ev\">GC I\/3 scores the type&#8217;s first victories. Over the next six weeks D.520 squadrons claim roughly 100 confirmed kills, including Bf 109s and Bf 110s.<\/div>\n<\/div>\n<div class=\"row\">\n<div class=\"yr\">15 Jun 1940<\/div>\n<div class=\"ev\">Sous-lieutenant Pierre Le Gloan downs several Italian aircraft in a single sortie over the south of France \u2014 the type&#8217;s most famous action.<\/div>\n<\/div>\n<div class=\"row\">\n<div class=\"yr\">25 Jun 1940<\/div>\n<div class=\"ev\">The armistice takes effect. Around 400\u2013440 D.520s have been built; the aircraft passes to Vichy France, and production later resumes under German control.<\/div>\n<\/div>\n<div class=\"row\">\n<div class=\"yr\">Sep 1940<\/div>\n<div class=\"ev\">D.520s take part in the defence of Dakar against the Anglo\u2013Free French expedition \u2014 among the type&#8217;s first actions against its former allies.<\/div>\n<\/div>\n<div class=\"row\">\n<div class=\"yr\">Jun\u2013Jul 1941<\/div>\n<div class=\"ev\">Vichy D.520s fight the British and Commonwealth in the Syria\u2013Lebanon campaign \u2014 the uncomfortable spectacle of French fighters against the Allies.<\/div>\n<\/div>\n<div class=\"row\">\n<div class=\"yr\">Nov 1942<\/div>\n<div class=\"ev\">During Operation Torch, Vichy D.520s at Oran engage US and British aircraft. Days later Germany occupies the Vichy zone and seizes the fleet of fighters.<\/div>\n<\/div>\n<div class=\"row\">\n<div class=\"yr\">1942\u201344<\/div>\n<div class=\"ev\">The Luftwaffe uses captured D.520s as advanced trainers; Italy and, from 1943, Bulgaria operate the type \u2014 Bulgaria flying it against American bombers.<\/div>\n<\/div>\n<div class=\"row\">\n<div class=\"yr\">1944\u201353<\/div>\n<div class=\"ev\">Liberated France flies a handful of surviving D.520s with improvised Free-French units, then in the training role. The last military flight is on 30 September 1953.<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"sec\">\n<div class=\"wrap\">\n<p class=\"kicker\">Stories &amp; eyewitnesses<\/p>\n<h2>The Dewoitine D.520 in twelve stories<\/h2>\n<div class=\"carou\">\n<div class=\"track\" id=\"hxtrack\">\n<div class=\"scard\">\n<div class=\"st\">The ace<\/div>\n<h3>Pierre Le Gloan&#8217;s five-in-one afternoon<\/h3>\n<p>On 15 June 1940, over Provence, one French pilot turned a bad day into legend.<\/p>\n<details>\n<summary>Read the story<\/summary>\n<p>Sous-lieutenant Pierre Le Gloan of GC III\/6 was scrambled against an Italian raid as France was collapsing around him. In a single sortie he shot down a string of Italian aircraft \u2014 most accounts credit four Fiat CR.42 biplane fighters and a BR.20 bomber \u2014 becoming an ace several times over in one afternoon.<\/p>\n<p>Le Gloan finished the war among France&#8217;s top-scoring pilots, most of his victories won on the D.520. His story captures both the aircraft&#8217;s real capability and the tragedy of 1940: brilliance in the cockpit could not offset catastrophe on the ground.<\/p>\n<\/details>\n<\/div>\n<div class=\"scard\">\n<div class=\"st\">First blood<\/div>\n<h3>GC I\/3 opens the account<\/h3>\n<p>The only fully-ready D.520 unit wasted no time proving the design.<\/p>\n<details>\n<summary>Read the story<\/summary>\n<p>On 13 May 1940, three days into the German offensive, pilots of GC I\/3 claimed the type&#8217;s first victories \u2014 a Heinkel He 111 and several Henschel Hs 126 observation aircraft. Over the following weeks the groupe would become the highest-scoring D.520 unit of the campaign.<\/p>\n<p>Their success was real, but it was also lonely. With only one groupe operational at the start of the battle, GC I\/3 could be in only one place at a time while the front burned everywhere at once.<\/p>\n<\/details>\n<\/div>\n<div class=\"scard\">\n<div class=\"st\">Too few<\/div>\n<h3>The squadrons that never got their aircraft<\/h3>\n<p>On paper France had hundreds of D.520s. On the flight line, it had a fraction.<\/p>\n<details>\n<summary>Read the story<\/summary>\n<p>The gap between production and delivery is the heart of the D.520 story. Airframes were rolling out of the factories, but acceptance, arming, testing and unit conversion all took time that France did not have in May 1940. Several groupes were still converting \u2014 flying a mix of MS.406s and new D.520s \u2014 when the fighting overtook them.<\/p>\n<p>It is why the honest verdict is always the same: a good fighter, available in the wrong quantity at the wrong moment.<\/p>\n<\/details>\n<\/div>\n<div class=\"scard\">\n<div class=\"st\">The cannon<\/div>\n<h3>One shell where it counts<\/h3>\n<p>The hub-mounted 20 mm gave the D.520 a heavyweight&#8217;s punch.<\/p>\n<details>\n<summary>Read the story<\/summary>\n<p>Firing along the centreline through the propeller shaft, the HS.404 cannon needed no synchronisation and put its rounds exactly where the pilot pointed the nose. A short, accurate burst could be lethal to a bomber or fighter alike.<\/p>\n<p>The trade-off was capacity: sixty rounds demanded discipline. Pilots learned to hold fire until the shot was certain \u2014 a habit that suited the D.520&#8217;s accurate gun platform.<\/p>\n<\/details>\n<\/div>\n<div class=\"scard\">\n<div class=\"st\">The redesign<\/div>\n<h3>The prototype that had to be rescued<\/h3>\n<p>The first D.520 was not good enough. The fix is why it was late.<\/p>\n<details>\n<summary>Read the story<\/summary>\n<p>The 1938 prototype was underpowered, its cooling marginal and its handling unsatisfactory. Rather than force it into service, the design bureau reworked the tail, wing and radiator and waited for a better engine.<\/p>\n<p>The gamble paid off in quality and cost in time. The aeroplane that emerged was genuinely competitive \u2014 but the months spent perfecting it were months stolen from the production run France desperately needed.<\/p>\n<\/details>\n<\/div>\n<div class=\"scard\">\n<div class=\"st\">The armistice<\/div>\n<h3>A fighter that kept being built after defeat<\/h3>\n<p>Surrender did not end the D.520&#8217;s story \u2014 it redirected it.<\/p>\n<details>\n<summary>Read the story<\/summary>\n<p>When France signed the armistice in June 1940, the D.520 might have simply stopped. Instead, the Germans permitted \u2014 and later demanded \u2014 continued production, and the type became the mainstay of the Vichy fighter arm.<\/p>\n<p>Hundreds more were completed after the fall of France, a strange afterlife in which a symbol of French resistance in the air became an instrument of a collaborationist state.<\/p>\n<\/details>\n<\/div>\n<div class=\"scard\">\n<div class=\"st\">Syria<\/div>\n<h3>French fighters against the RAF<\/h3>\n<p>In 1941 the D.520 fought the very allies it had defended France beside.<\/p>\n<details>\n<summary>Read the story<\/summary>\n<p>During the Syria\u2013Lebanon campaign of June\u2013July 1941, Vichy D.520 units fought British and Commonwealth aircraft \u2014 Hurricanes, Gladiators and Fleet Air Arm types \u2014 over the Levant. French pilots scored against the RAF; the RAF scored against them.<\/p>\n<p>It is an episode most histories handle carefully, and rightly so: skilled airmen on both sides, killing each other in a war neither the men nor the machines had chosen.<\/p>\n<\/details>\n<\/div>\n<div class=\"scard\">\n<div class=\"st\">Torch<\/div>\n<h3>Oran, November 1942<\/h3>\n<p>The Vichy D.520&#8217;s last major fight was against the Americans.<\/p>\n<details>\n<summary>Read the story<\/summary>\n<p>When Allied forces landed in French North Africa during Operation Torch, Vichy D.520s at Oran rose to oppose the invasion, tangling with US and British carrier aircraft before the local ceasefire. Within days, Germany responded by occupying the Vichy zone and seizing France&#8217;s remaining fighters.<\/p>\n<p>The bitterness of that moment is hard to overstate. The pilots at Oran were ordered to die, if necessary, resisting an Allied landing whose ultimate aim was the liberation of their own country \u2014 and their reward for obeying was to watch, days later, as the Germans they had been told to trust swept south to strip them of their aircraft. Some flew their D.520s to North African fields still in French hands; others saw them impounded on the spot. It was the definitive proof, if any were needed, that Vichy&#8217;s &#8220;armed neutrality&#8221; had always been a fiction, and that the D.520 had been defending a position that could not be held.<\/p>\n<p>The aircraft that had defended France in 1940 ended its French front-line career fighting the liberators \u2014 then was carried off by the occupier.<\/p>\n<\/details>\n<\/div>\n<div class=\"scard\">\n<div class=\"st\">Luftwaffe grey<\/div>\n<h3>The D.520 in German markings<\/h3>\n<p>Germany&#8217;s response to a captured fleet: put it to work.<\/p>\n<details>\n<summary>Read the story<\/summary>\n<p>After seizing hundreds of D.520s in late 1942, the Luftwaffe pressed the type into service as an advanced trainer with fighter-training wings such as JG 101, 103, 105 and 107. It was a sensible use of a modern, pleasant-handling fighter in a role that freed front-line types for combat.<\/p>\n<p>A number of German pilots were killed or injured in D.520 accidents during training \u2014 a quiet reminder that even a &#8220;friendly&#8221; fighter demands respect.<\/p>\n<\/details>\n<\/div>\n<div class=\"scard\">\n<div class=\"st\">Bulgaria<\/div>\n<h3>Chasing B-17s over the Balkans<\/h3>\n<p>The D.520&#8217;s most unexpected combat was against American heavy bombers.<\/p>\n<details>\n<summary>Read the story<\/summary>\n<p>From 1943 Bulgaria received around ninety-six D.520s and equipped its 6th Fighter Regiment. When USAAF heavy bombers raided the Balkans, Bulgarian D.520 pilots went up against B-17s, B-24s and their P-38 escorts \u2014 obsolescent lightweights against four-engine bombers and modern American fighters.<\/p>\n<p>They claimed a handful of victories at heavy cost, and by 1944 the surviving aircraft were relegated to training. It was the D.520&#8217;s final combat chapter.<\/p>\n<\/details>\n<\/div>\n<div class=\"scard\">\n<div class=\"st\">Escape<\/div>\n<h3>The pilots who flew to freedom<\/h3>\n<p>Not every D.520 stayed with Vichy.<\/p>\n<details>\n<summary>Read the story<\/summary>\n<p>In the chaos of June 1940 a small number of D.520s were flown out of France \u2014 some to Britain, others later pressed into Free-French service. A pair even took part in the Dakar operation of September 1940, and captured examples in Syria were used by Free-French pilots.<\/p>\n<p>These were footnotes in numbers, but they mattered: proof that the aircraft, and some of its pilots, chose the other side of the war.<\/p>\n<\/details>\n<\/div>\n<div class=\"scard\">\n<div class=\"st\">Afterlife<\/div>\n<h3>From frontline fighter to flying memorial<\/h3>\n<p>The D.520 soldiered on quietly into the 1950s.<\/p>\n<details>\n<summary>Read the story<\/summary>\n<p>Liberated France gathered surviving D.520s into improvised units in 1944\u201345 and then used the type for training. The last flight in French military hands came on 30 September 1953 \u2014 thirteen years after the aircraft&#8217;s brief, brilliant, doomed debut.<\/p>\n<p>Today a few survivors keep the story alive, one of them painted as Le Gloan&#8217;s aircraft, standing for a fighter that deserved a better war.<\/p>\n<\/details>\n<\/div>\n<div class=\"scard\">\n<div class=\"st\">The designer<\/div>\n<h3>\u00c9mile Dewoitine&#8217;s long shadow<\/h3>\n<p>The man whose name is on the fighter had already left France before it fought.<\/p>\n<details>\n<summary>Read the story<\/summary>\n<p>\u00c9mile Dewoitine was one of the great figures of French aviation, his fighters spanning the biplane era to the eve of the jet age. Nationalisation in the 1930s stripped him of his own company, and the D.520 was built by the state combine SNCAM that absorbed his design bureau.<\/p>\n<p>His post-war path was troubled \u2014 he faced accusations of collaboration and spent years abroad, later working on aircraft projects in Argentina. The fighter that carries his name outlived the controversy, remembered now for its design rather than its designer&#8217;s politics.<\/p>\n<\/details>\n<\/div>\n<div class=\"scard\">\n<div class=\"st\">The Italian verdict<\/div>\n<h3>What the Regia Aeronautica thought<\/h3>\n<p>Italy captured D.520s and tested them against its own fighters.<\/p>\n<details>\n<summary>Read the story<\/summary>\n<p>Having taken around thirty D.520s in 1940 and more later, Italian evaluators formed a mixed view. They admired the hard-hitting centreline cannon \u2014 heavier and more accurate than the armament of their own nimble but lightly-gunned fighters \u2014 but were less impressed by the overall performance, which by 1942 was no longer competitive.<\/p>\n<p>It was a fair judgement. The D.520 of 1940 had been a match for the best; the same aircraft two years later was simply an aging design, valuable mainly for training and home defence.<\/p>\n<\/details>\n<\/div>\n<div class=\"scard\">\n<div class=\"st\">Roundels<\/div>\n<h3>The many flags of one fighter<\/h3>\n<p>Few aircraft wore so many national markings in so few years.<\/p>\n<details>\n<summary>Read the story<\/summary>\n<p>In the space of about five years the D.520 carried the roundels of the French Republic, the markings of Vichy France with their distinctive red-and-yellow striping, the crosses of the Luftwaffe, the fasces of Italy and the markings of Bulgaria \u2014 and finally the roundel of a liberated France again.<\/p>\n<p>That restless procession of markings is the D.520&#8217;s story in miniature: a fine aircraft swept up and used by whoever held the airfields, its allegiance decided by defeat and occupation rather than by design.<\/p>\n<\/details>\n<\/div>\n<div class=\"scard\">\n<div class=\"st\">The what-if<\/div>\n<h3>The fighter that came a year early \u2014 and too late<\/h3>\n<p>Imagine the D.520 in the numbers of 1941, in the France of 1940.<\/p>\n<details>\n<summary>Read the story<\/summary>\n<p>The enduring fascination of the D.520 is the counterfactual. Had the redesign gone faster, had the factories delivered in 1939 instead of 1940, France might have met the German offensive with several hundred modern fighters instead of one ready groupe. Whether that would have changed the outcome is doubtful \u2014 the battle was lost on the ground \u2014 but it would certainly have made the air fighting far bloodier for the Luftwaffe.<\/p>\n<p>That &#8220;what if&#8221; is why the D.520 is remembered at all. It is the rare case of a genuinely good weapon that arrived just too late to prove what it might have done.<\/p>\n<\/details>\n<\/div>\n<div class=\"scard\">\n<div class=\"st\">The phoney war<\/div>\n<h3>A winter spent waiting for aircraft<\/h3>\n<p>Through the quiet months of 1939\u201340, French fighter squadrons waited for a fighter that dribbled out of the factories.<\/p>\n<details>\n<summary>Read the story<\/summary>\n<p>The &#8220;phoney war&#8221; that followed the declaration of hostilities in September 1939 should have been the D.520&#8217;s golden opportunity \u2014 months of relative calm in which to build up strength. Instead, slow production meant units converted piecemeal, often flying a mix of old Moranes and new Dewoitines, never quite reaching full strength before the real fighting began.<\/p>\n<p>By the time the Germans attacked in May, the head start had been squandered \u2014 not through any fault of the pilots, but through an industrial machine that simply could not turn orders into aircraft fast enough.<\/p>\n<\/details>\n<\/div>\n<div class=\"scard\">\n<div class=\"st\">The engine abroad<\/div>\n<h3>The 12Y&#8217;s many nationalities<\/h3>\n<p>The D.520&#8217;s engine had a life far beyond France.<\/p>\n<details>\n<summary>Read the story<\/summary>\n<p>The Hispano-Suiza 12Y was one of the most widely licensed engines of its era. Versions or derivatives powered Soviet fighters, equipped Swiss and other air forces, and inspired designs around the world. In a sense the D.520 shared its heart with aircraft on several sides of the coming war.<\/p>\n<p>That ubiquity is a reminder that the D.520 was built from sound, mainstream 1930s technology \u2014 not exotic, but proven \u2014 which is part of why it worked as well as it did.<\/p>\n<\/details>\n<\/div>\n<div class=\"scard\">\n<div class=\"st\">Self-sealing<\/div>\n<h3>The tanks that brought pilots home<\/h3>\n<p>A detail that saved lives: fuel tanks that did not explode at the first hit.<\/p>\n<details>\n<summary>Read the story<\/summary>\n<p>Earlier French fighters had a grim tendency to burn when hit. The D.520&#8217;s self-sealing fuel tanks, along with cockpit armour and a protected windscreen, reflected the hard lessons of the Spanish Civil War and gave its pilots a real chance of surviving battle damage.<\/p>\n<p>It is an unglamorous kind of progress, but in the brutal air fighting of 1940 it was exactly the sort of detail that decided whether a pilot flew again the next morning.<\/p>\n<\/details>\n<\/div>\n<div class=\"scard\">\n<div class=\"st\">Serial 862<\/div>\n<h3>The survivor at Le Bourget<\/h3>\n<p>One aircraft carries the whole story into the present.<\/p>\n<details>\n<summary>Read the story<\/summary>\n<p>The D.520 displayed at the Mus\u00e9e de l&#8217;Air et de l&#8217;Espace, serial number 862, is painted in the markings of GC III\/6 as the mount of Pierre Le Gloan. It stands today among the landmarks of French aviation, small and businesslike beside the giants around it.<\/p>\n<p>To see it is to grasp the D.520&#8217;s paradox in an instant: a modest, well-made little fighter, wearing the colours of a hero, standing for a battle it could not win and a legacy still argued over eighty years later.<\/p>\n<\/details>\n<\/div>\n<\/div>\n<div class=\"cbtns\"><button class=\"cbtn\" onclick=\"document.getElementById('hxtrack').scrollBy({left:-380,behavior:'smooth'})\" aria-label=\"Previous\">&#8249;<\/button><button class=\"cbtn\" onclick=\"document.getElementById('hxtrack').scrollBy({left:380,behavior:'smooth'})\" aria-label=\"Next\">&#8250;<\/button><\/div>\n<\/div>\n<\/div>\n<div class=\"sec\">\n<div class=\"wrap\">\n<p class=\"kicker\">In action<\/p>\n<h2>The Dewoitine D.520, campaign by campaign<\/h2>\n<p class=\"lead\">Six weeks of desperate fighting in 1940, then a long, divided second life across half a dozen air forces. This is where the D.520 actually fought.<\/p>\n<p><b>The Battle of France (May\u2013June 1940).<\/b> This was the D.520&#8217;s real war, and it lasted barely six weeks. Starting with a single operational groupe and building up as fast as deliveries allowed, the type&#8217;s squadrons fought a fighting retreat across northern and eastern France. They claimed roughly a hundred confirmed victories \u2014 a meaningful tally against the Luftwaffe&#8217;s Bf 109s, Bf 110s and bombers \u2014 while losing a similar number of their own to combat, bombing and the destruction of overrun airfields. The aircraft did well; the campaign was lost regardless, on the ground and by sheer weight of numbers.<\/p>\n<p>The attrition is worth dwelling on, because it shows both the aircraft&#8217;s quality and the hopelessness of its situation. D.520 units lost heavily \u2014 but a large share of those losses came not in air combat, where the type held its own, but on the ground: aircraft caught by bombing, abandoned on overrun airfields, or destroyed to prevent capture as the front dissolved. In the air, against the Luftwaffe&#8217;s fighters, the exchange was far closer to even than the overall German victory would suggest. That gap between air-combat performance and battlefield outcome is the D.520 story in a single statistic.<\/p>\n<p>The geography of the campaign compounded the problem. As the German breakthrough drove deep into France, D.520 units were forced into a near-constant retreat, abandoning one airfield after another, flying from improvised strips, and losing serviceable aircraft simply because there was no time to recover or repair them. Fighting while retreating is the hardest thing an air force can be asked to do, and the fact that the D.520 groupes kept scoring at all under those conditions says a great deal about both the aircraft and the men flying it. But no amount of tactical success in the air could slow an armoured breakthrough on the ground, and by mid-June the surviving units were being pulled south and, ultimately, out of the fight altogether.<\/p>\n<p><b>The Italian front (June 1940).<\/b> When Italy declared war on a already-beaten France, D.520 units in the south briefly had the better of the Regia Aeronautica. Pierre Le Gloan&#8217;s famous multiple-kill sortie of 15 June belongs to this short, one-sided chapter \u2014 a rare bright spot in a black month.<\/p>\n<p><b>Syria and Lebanon (1941).<\/b> Under Vichy, the D.520 became the fighter of a defeated France defending its empire \u2014 and in the Levant that meant fighting the British. Over roughly five weeks in mid-1941, Vichy D.520s dueled RAF and Commonwealth aircraft, scoring and being scored upon in a campaign that ended with the Allies in control of Syria and Lebanon. The fighting was fierce and personal: reinforcements were flown in from France across the Mediterranean, and the D.520 units gave a genuinely stubborn account of themselves before being ground down by Allied numbers and the hopelessness of their strategic position.<\/p>\n<p><b>North Africa and Operation Torch (1942).<\/b> The last significant Vichy resistance in the air came at Oran in November 1942, when D.520s contested the Allied landings before the local armistice. It closed the aircraft&#8217;s French combat career on the wrong side of history and triggered the German seizure of the fleet. For the pilots who flew those sorties, it was a wrenching business \u2014 ordered to resist an Allied landing that many of them privately welcomed, then, within days, watching the Germans they had nominally served pour across the demarcation line to strip Vichy of its aircraft. Few episodes capture the moral wreckage of a defeated, divided nation quite so sharply.<\/p>\n<p><b>Axis and Bulgarian service (1942\u201344).<\/b> As a Luftwaffe trainer the D.520 fired few shots in anger, but in Bulgarian hands it fought a genuine defensive campaign against USAAF bomber raids over the Balkans in 1943\u201344 \u2014 its final taste of combat, and a losing one against overwhelming American strength.<\/p>\n<p>Taken together, these scattered campaigns add up to one of the strangest combat records of the war. The same fighter fought Germans in the skies of France, Italians over the Riviera, the British over the Levant, the Americans over Algeria, and the Americans again \u2014 in different hands \u2014 over the Balkans. It was, by turns, a defender of the Republic, a weapon of Vichy and a tool of the Axis. No propaganda could make a tidy story out of that, and none should try. What the record really shows is an aircraft swept helplessly through the shifting fronts and allegiances of a continent at war \u2014 present at an extraordinary range of battles, decisive in none of them.<\/p>\n<\/div>\n<\/div>\n<div class=\"sec\">\n<div class=\"wrap\">\n<p class=\"kicker\">The pilots<\/p>\n<h2>The men who flew the Dewoitine D.520<\/h2>\n<p class=\"lead\">An aircraft is only as good as the people in it. In 1940 the D.520 was flown by some of the finest pilots France had \u2014 and its reputation rests as much on their skill as on the airframe.<\/p>\n<div class=\"cards\">\n<div class=\"card\">\n<div class=\"n\">01<\/div>\n<h3>Pierre Le Gloan<\/h3>\n<p>The type&#8217;s most famous ace. Le Gloan scored heavily on the D.520 in 1940 \u2014 including his celebrated multiple-kill sortie against the Italians on 15 June \u2014 and became one of France&#8217;s leading fighter pilots. His aircraft&#8217;s markings adorn the survivor at Le Bourget.<\/p>\n<\/div>\n<div class=\"card\">\n<div class=\"n\">02<\/div>\n<h3>The aces of GC I\/3<\/h3>\n<p>The only fully operational D.520 groupe in May 1940 was also its highest-scoring. Its pilots opened the type&#8217;s account on 13 May and fought a running battle across France, proving in six desperate weeks that the aircraft could do everything asked of it.<\/p>\n<\/div>\n<div class=\"card\">\n<div class=\"n\">03<\/div>\n<h3>The converts from the Morane<\/h3>\n<p>Most D.520 pilots came to it from the slower MS.406. Their verdict was near-unanimous: the Dewoitine was faster, harder-hitting and more competitive, a machine in which a good pilot finally had a fair chance against the Bf 109E.<\/p>\n<\/div>\n<\/div>\n<p>France&#8217;s fighter arm in 1940 was not short of talent. Its leading aces of the campaign \u2014 men like Edmond Marin la Mesl\u00e9e, who scored heavily on the American-built Curtiss H-75, and the D.520 specialists of GC I\/3 and GC III\/6 \u2014 showed that French pilots, given a competitive aircraft, could match anyone. The tragedy was that this generation of airmen reached its peak just as the nation around them collapsed, so that their skill bought local victories inside a national defeat.<\/p>\n<p>The pilots&#8217; testimony is the best evidence we have for how good the D.520 really was, precisely because it is so consistent. Men who had flown the MS.406 into combat and lived described the D.520 as a transformation \u2014 an aircraft that let them turn, climb and shoot with the enemy instead of merely surviving him. That is a more reliable measure than any single performance figure, because it came from people whose lives depended on getting the judgement right.<\/p>\n<p>It is worth remembering, too, that many of these pilots flew on into the aircraft&#8217;s divided second life. Some escaped to continue the fight with the Allies; others served, willingly or not, under Vichy and found themselves flying against former friends. The same skill that made the D.520 dangerous in 1940 was later turned, tragically, against the British over Syria and the Americans over North Africa.<\/p>\n<p>It would be wrong, though, to reduce these men to their worst moment. Most were professional airmen caught in an impossible situation, obeying a chain of command that had itself been shattered by defeat. Some deserted to fight on with the Free French; some flew for Vichy out of duty, discipline or simple inertia; a few later crossed back to the Allied side and died in Allied cockpits. Their choices were as tangled as the aircraft&#8217;s own career, and they deserve to be remembered as individuals rather than as a verdict \u2014 skilled pilots handed a terrible hand, doing what they judged they had to.<\/p>\n<p>It is striking, too, how young and how professional this generation was. The core of France&#8217;s fighter arm in 1940 were long-service NCOs and junior officers \u2014 men who had spent the 1930s learning their trade on biplanes and early monoplanes, and who were, on the eve of the war, as well trained as any fighter pilots in Europe. What they lacked was not skill but modern aircraft in quantity and a coherent doctrine to use them. The D.520 finally gave a fraction of them the first; nothing could give them the second in time. The result was pockets of brilliant flying inside a collapsing system \u2014 exactly the pattern the aircraft&#8217;s own history would repeat.<\/p>\n<div class=\"gd\">\n<details>\n<summary><span class=\"num\">10<\/span><span class=\"gt\">The Dewoitine D.520 and Pierre Le Gloan: the type&#8217;s defining pilot<\/span><span class=\"pm\">+<\/span><\/summary>\n<div class=\"gd-body\">\n<p>No single airman is more bound up with the D.520 than Pierre Le Gloan. A pre-war non-commissioned pilot of exceptional gunnery, he flew the D.520 with GC III\/6 and, on 15 June 1940, destroyed a string of Italian aircraft in one sortie \u2014 most accounts credit four Fiat CR.42 fighters and a BR.20 bomber \u2014 a feat that made him a national hero at the very moment France was collapsing.<\/p>\n<p>His later career mirrors the aircraft&#8217;s own moral complexity. Serving under Vichy, he fought the British in Syria in 1941, adding RAF aircraft to a victory list that eventually numbered well into the teens, most of them scored on the D.520. He died in 1943, after France had returned to the Allied side, when his aircraft \u2014 by then an American type \u2014 was lost to an engine fire. The museum at Le Bourget honours him by painting its surviving D.520 in his GC III\/6 markings, so that the type&#8217;s finest pilot and its most complicated legacy are remembered together.<\/p>\n<\/div>\n<\/details>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"sec\">\n<div class=\"wrap\">\n<p class=\"kicker\">A divided air force<\/p>\n<h2>Vichy France and the Dewoitine D.520&#8217;s divided war<\/h2>\n<p class=\"lead\">After June 1940 the D.520 stopped being simply &#8220;France&#8217;s fighter&#8221; and became something far more troubling: the front-line weapon of a defeated, divided nation, flown on every side of the war.<\/p>\n<p>The armistice of June 1940 split France in two. The unoccupied south and the empire came under the Vichy government, which was permitted to keep armed forces \u2014 including fighter squadrons \u2014 nominally to defend French territory and neutrality. The D.520, as the best fighter available, naturally equipped many of them. On paper this was self-defence; in practice it meant that when the Allies moved against Vichy-held territory, French pilots in French fighters opened fire on the British and, later, the Americans.<\/p>\n<p>That happened twice in earnest. Over Syria and Lebanon in the summer of 1941, Vichy D.520s fought a bitter little air campaign against the RAF, the Commonwealth and the Fleet Air Arm. Over North Africa in November 1942, during Operation Torch, they contested the Allied landings around Oran before a local ceasefire. In both cases skilled French airmen were killed by, and killed, the very allies they had stood beside in 1940 \u2014 the kind of fratricide that only a national catastrophe produces.<\/p>\n<p>Then the aircraft changed sides again. When Germany occupied the Vichy zone in late 1942 it seized the surviving D.520s wholesale, and the fighter that had defended France, then served Vichy, now wore Luftwaffe grey as a trainer \u2014 and Bulgarian and Italian markings in combat. Few aircraft of the war carried so many different roundels in so short a time. It is why any honest account of the D.520 has to hold two ideas at once: genuine pride in a fine French design, and clear-eyed discomfort about much of what was done with it.<\/p>\n<p>It helps to remember how little of this was foreseeable in 1938. When Dewoitine&#8217;s team drew the D.520 they were designing a fighter to defend the French Republic against Germany \u2014 and for six weeks in 1940 that is exactly what it did. Everything that came afterwards \u2014 Vichy, Syria, the Luftwaffe grey, the Bulgarian roundels \u2014 flowed not from the drawing board but from the catastrophe of defeat, which handed a perfectly ordinary national fighter to a succession of masters its makers never intended. The D.520&#8217;s tangled service is a history of France&#8217;s misfortune written in one airframe, not a verdict on the aircraft or the people who first flew it.<\/p>\n<div class=\"gd\">\n<details>\n<summary><span class=\"num\">11<\/span><span class=\"gt\">The Dewoitine D.520 under occupation: from Vichy fighter to Axis trainer<\/span><span class=\"pm\">+<\/span><\/summary>\n<div class=\"gd-body\">\n<p>When German forces executed Case Anton and moved into the unoccupied zone in November 1942, they captured the bulk of the Vichy air force&#8217;s D.520s \u2014 on the order of 250 aircraft \u2014 and put roughly sixty more into production or completion under occupation. The Luftwaffe had little use for an obsolescent fighter at the front, but it made excellent sense as an advanced trainer, and D.520s duly equipped fighter-training wings such as JG 101, 103, 105 and 107, where German fledglings learned to handle a fast, cannon-armed monoplane.<\/p>\n<p>Surplus airframes were passed to Germany&#8217;s allies. Italy had already taken captured D.520s in 1940 and used them for home defence and training; Bulgaria received close to a hundred from 1943 and flew them in combat against American bombers over the Balkans. By the time the war ended, the D.520 had served \u2014 in one role or another \u2014 the air arms of France, Vichy France, Germany, Italy and Bulgaria, an extraordinary spread for an aircraft built in such modest numbers and remembered, above all, for a battle it could not win.<\/p>\n<\/div>\n<\/details>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"sec\">\n<div class=\"wrap\">\n<p class=\"kicker\">Legacy<\/p>\n<h2>The Dewoitine D.520: tactics, reputation and what it left behind<\/h2>\n<p class=\"lead\">Why a fighter that changed nothing strategically is still remembered as France&#8217;s best of 1940 \u2014 and what it teaches about procurement, timing and the limits of quality.<\/p>\n<p>The enduring lesson of the D.520 is that a good weapon delivered late is not the same as a good weapon. France did many things right with this design: it chose a sensible layout, a proven engine and a genuinely effective armament, and it refused to rush an unsatisfactory prototype into service. Every one of those correct decisions cost time \u2014 and time was the one resource France could not replace in 1939\u201340. By the time the aircraft was truly ready, the strategic situation had already made its qualities almost irrelevant.<\/p>\n<p>Tactically, the D.520 taught French pilots to fight the war that was actually coming: fast passes, deflection gunnery with a hard-hitting centreline cannon, and the disciplined use of a limited ammunition load. Those who mastered it \u2014 Le Gloan and the aces of GC I\/3 among them \u2014 showed that the machine, in skilled hands, could hold its own against the best the Luftwaffe had.<\/p>\n<p>Its reputation has been shaped as much by its afterlife as by 1940. The awkward Vichy service, the fratricidal fights against the Allies in Syria and North Africa, and the sight of the aircraft in German and Bulgarian markings all complicate any simple &#8220;hero&#8221; narrative. That complexity is precisely why the D.520 is worth remembering honestly: it is a reminder that aeroplanes serve whoever holds them, and that the same airframe can be flown for a free nation, a collaborationist state and an enemy air force within the space of three years.<\/p>\n<p>In the longer view, the D.520 was the last of France&#8217;s independent pre-war fighter line and a bridge to nothing \u2014 the French aircraft industry that would emerge after 1945 built jets under very different conditions. What survives is the aircraft&#8217;s stubborn reputation as the one that could have mattered, and the handful of preserved machines that let us judge that claim with our own eyes.<\/p>\n<p>There is a broader lesson in the D.520 for anyone interested in how nations arm themselves. France did not lack talent, ideas or even, on paper, industrial capacity; what it lacked was time and the ability to convert designs into delivered, worked-up squadrons quickly enough. A weapon that is excellent but late, or excellent but rare, buys very little on the day of battle. The Spitfire and Hurricane were not obviously better aircraft than the D.520 \u2014 but they existed in numbers, in trained hands, when they were needed, and that made all the difference. The D.520 is the counter-example that proves the rule.<\/p>\n<p>It is also a reminder to judge aircraft in their context rather than by legend. Stripped of the &#8220;France&#8217;s best fighter&#8221; branding and the &#8220;what if&#8221; romance, the D.520 was a competent, likeable, well-armed interceptor of the 1940 generation \u2014 no more a war-winner than any single type could be, but a genuine credit to the people who designed and flew it. Remembered honestly, on those terms, it needs no exaggeration to earn its place in this museum.<\/p>\n<div class=\"gd\">\n<details>\n<summary><span class=\"num\">12<\/span><span class=\"gt\">The Dewoitine D.520&#8217;s victory claims: how to read the numbers<\/span><span class=\"pm\">+<\/span><\/summary>\n<div class=\"gd-body\">\n<p>You will see the D.520 credited with figures like &#8220;108 confirmed and 39 probable&#8221; victories in the Battle of France, and unit-by-unit tallies for GC I\/3, II\/3, II\/7, III\/3 and III\/6. These come from French squadron records and are the best figures available, but they are wartime claims \u2014 and every air force of the era over-counted, because two pilots firing at the same aircraft, or a &#8220;kill&#8221; that limped home, both produced optimistic paperwork.<\/p>\n<p>The responsible way to present the D.520&#8217;s record is therefore as a range and a trend rather than a scoreboard: on the order of a hundred confirmed claims against the Luftwaffe for a broadly comparable number of D.520s lost, in a campaign that France lost anyway. That is genuinely creditable for so small a force \u2014 and it is a very different, and more honest, statement than &#8220;the D.520 dominated the Bf 109.&#8221;<\/p>\n<\/div>\n<\/details>\n<\/div>\n<div class=\"gd\">\n<details>\n<summary><span class=\"num\">13<\/span><span class=\"gt\">The Dewoitine D.520 after 1945: quiet retirement and preservation<\/span><span class=\"pm\">+<\/span><\/summary>\n<div class=\"gd-body\">\n<p>Liberation did not immediately end the D.520&#8217;s story. In the confused, improvised months of 1944 the French Forces of the Interior gathered up airworthy survivors \u2014 many of them German trainers abandoned or captured on French soil \u2014 and formed scratch units that flew the type against retreating German pockets and in the training role. It was a strange homecoming: a French fighter, taken by the occupier, handed back by circumstance to the France it had been built to defend.<\/p>\n<p>Through the late 1940s the surviving aircraft settled into service as advanced trainers with the reborn Arm\u00e9e de l&#8217;Air, gradually worn out and replaced by newer types and, soon, by jets. The last flight of a D.520 in French military hands came on 30 September 1953 \u2014 a full fifteen years after the prototype first flew, and a fitting quiet end for a design that had been overtaken by history almost as soon as it appeared.<\/p>\n<p>What remains is a handful of preserved airframes and an outsized reputation. Restorers, museums and enthusiasts have kept the type&#8217;s memory alive far out of proportion to the few weeks it spent as France&#8217;s front-line fighter \u2014 testament to the enduring appeal of the aircraft that, in another timeline, might have been remembered very differently.<\/p>\n<p>That enthusiasm is not mere nostalgia. Restoring a D.520 is painstaking, expensive work, undertaken by people who could spend their time on more famous or more numerous types, and the fact that they choose the Dewoitine says something about the hold it has on the French aviation imagination in particular. It is the fighter of a proud tradition&#8217;s most painful hour \u2014 and preserving it, flying it, arguing about it, is a way of refusing to let that hour be either forgotten or falsified. In that sense the D.520&#8217;s afterlife is more active, and more thoughtful, than that of many aircraft with far grander combat records.<\/p>\n<\/div>\n<\/details>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"sec\">\n<div class=\"wrap\">\n<p class=\"kicker\">Photographs<\/p>\n<h2>The Dewoitine D.520 in photographs<\/h2>\n<div class=\"gtrack\">\n<figure><img data-opt-id=1058739088  data-opt-src=\"https:\/\/ml5psubhxdln.i.optimole.com\/cb:78--.b845\/w:1024\/h:451\/q:96\/f:best\/https:\/\/migflug.com\/wp-content\/uploads\/2026\/08\/dewoitine-d-520-wartime-profile.jpg\"  decoding=\"async\" src=\"data:image/svg+xml,%3Csvg%20viewBox%3D%220%200%201024%20451%22%20width%3D%221024%22%20height%3D%22451%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Crect%20width%3D%221024%22%20height%3D%22451%22%20fill%3D%22transparent%22%2F%3E%3C%2Fsvg%3E\" alt=\"Dewoitine D.520 in flight-line configuration, wartime\"><figcaption>A wartime Dewoitine D.520. Photo: unknown author (Wikimedia Commons, public domain).<\/figcaption><\/figure>\n<figure><img data-opt-id=918306054  data-opt-src=\"https:\/\/ml5psubhxdln.i.optimole.com\/cb:78--.b845\/w:768\/h:521\/q:96\/f:best\/https:\/\/migflug.com\/wp-content\/uploads\/2026\/08\/dewoitine-d-520-french-pilot-1940.jpg\"  decoding=\"async\" src=\"data:image/svg+xml,%3Csvg%20viewBox%3D%220%200%20768%20521%22%20width%3D%22768%22%20height%3D%22521%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Crect%20width%3D%22768%22%20height%3D%22521%22%20fill%3D%22transparent%22%2F%3E%3C%2Fsvg%3E\" alt=\"Dewoitine D.520 with French pilot\"><figcaption>A French pilot with his Dewoitine D.520, c.1940. Photo: SDASM Archives (Wikimedia Commons, no known copyright restrictions).<\/figcaption><\/figure>\n<figure><img data-opt-id=1800963679  data-opt-src=\"https:\/\/ml5psubhxdln.i.optimole.com\/cb:78--.b845\/w:auto\/h:auto\/q:96\/f:best\/https:\/\/migflug.com\/wp-content\/uploads\/2026\/08\/dewoitine-d-520-north-africa-algeria.jpg\"  decoding=\"async\" src=\"data:image/svg+xml,%3Csvg%20viewBox%3D%220%200%20100%%20100%%22%20width%3D%22100%%22%20height%3D%22100%%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Crect%20width%3D%22100%%22%20height%3D%22100%%22%20fill%3D%22transparent%22%2F%3E%3C%2Fsvg%3E\" alt=\"Dewoitine D.520 side profile\"><figcaption>A Dewoitine D.520 photographed in Algeria. Photo: SDASM Archives (Wikimedia Commons, no known copyright restrictions).<\/figcaption><\/figure>\n<figure><img data-opt-id=2131240913  data-opt-src=\"https:\/\/ml5psubhxdln.i.optimole.com\/cb:78--.b845\/w:768\/h:576\/q:96\/f:best\/https:\/\/migflug.com\/wp-content\/uploads\/2026\/08\/dewoitine-d-520-cockpit.jpg\"  decoding=\"async\" src=\"data:image/svg+xml,%3Csvg%20viewBox%3D%220%200%20768%20576%22%20width%3D%22768%22%20height%3D%22576%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Crect%20width%3D%22768%22%20height%3D%22576%22%20fill%3D%22transparent%22%2F%3E%3C%2Fsvg%3E\" alt=\"Dewoitine D.520 cockpit\"><figcaption>The D.520 cockpit, preserved at Le Bourget. Photo: PpPachy (Wikimedia Commons, CC BY-SA 2.5).<\/figcaption><\/figure>\n<figure><img data-opt-id=1657082623  data-opt-src=\"https:\/\/ml5psubhxdln.i.optimole.com\/cb:78--.b845\/w:1516\/h:1080\/q:96\/f:best\/https:\/\/migflug.com\/wp-content\/uploads\/2026\/08\/dewoitine-d-520-preserved-airframe.jpg\"  decoding=\"async\" src=\"data:image/svg+xml,%3Csvg%20viewBox%3D%220%200%201536%201094%22%20width%3D%221536%22%20height%3D%221094%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Crect%20width%3D%221536%22%20height%3D%221094%22%20fill%3D%22transparent%22%2F%3E%3C%2Fsvg%3E\" alt=\"Preserved Dewoitine D.520, detail\"><figcaption>A preserved Dewoitine D.520. Photo: G.Garitan (Wikimedia Commons, CC BY-SA 4.0).<\/figcaption><\/figure>\n<figure><img data-opt-id=1664564904  data-opt-src=\"https:\/\/ml5psubhxdln.i.optimole.com\/cb:78--.b845\/w:1536\/h:1028\/q:96\/f:best\/https:\/\/migflug.com\/wp-content\/uploads\/2026\/08\/dewoitine-d-520-musee-air-espace.jpg\"  decoding=\"async\" src=\"data:image/svg+xml,%3Csvg%20viewBox%3D%220%200%201536%201028%22%20width%3D%221536%22%20height%3D%221028%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Crect%20width%3D%221536%22%20height%3D%221028%22%20fill%3D%22transparent%22%2F%3E%3C%2Fsvg%3E\" alt=\"Dewoitine D.520 at the Mus\u00e9e de l'Air et de l'Espace\"><figcaption>Dewoitine D.520 at the Mus\u00e9e de l\u2019Air et de l\u2019Espace, Le Bourget. Photo: Duch.seb (Wikimedia Commons, CC BY-SA 3.0).<\/figcaption><\/figure>\n<figure><img data-opt-id=1228266336  data-opt-src=\"https:\/\/ml5psubhxdln.i.optimole.com\/cb:78--.b845\/w:1536\/h:1015\/q:96\/f:best\/https:\/\/migflug.com\/wp-content\/uploads\/2026\/08\/dewoitine-d-520-detail-view.jpg\"  decoding=\"async\" src=\"data:image/svg+xml,%3Csvg%20viewBox%3D%220%200%201536%201015%22%20width%3D%221536%22%20height%3D%221015%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Crect%20width%3D%221536%22%20height%3D%221015%22%20fill%3D%22transparent%22%2F%3E%3C%2Fsvg%3E\" alt=\"Dewoitine D.520 preserved airframe\"><figcaption>Dewoitine D.520, detail view. Photo: G.Garitan (Wikimedia Commons, CC BY-SA 4.0).<\/figcaption><\/figure>\n<\/div>\n<p class=\"fnote\">Photographs via Wikimedia Commons under the licences noted in each caption. Period images are in the public domain or released without restrictions; museum photographs are used under Creative Commons with attribution to their authors.<\/p>\n<\/div>\n<\/div>\n<div class=\"sec\">\n<div class=\"wrap\">\n<p class=\"kicker\">On film<\/p>\n<h2>The Dewoitine D.520 on film<\/h2>\n<p class=\"lead\">A concise, well-sourced English-language history of the aircraft, its design and its complicated career.<\/p>\n<div class=\"vidwrap\"><iframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/ZuvuDCaoOF0\" title=\"France's Only Fighter That Could Rival Germany's: Dewoitine D.520\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen loading=\"lazy\"><\/iframe><\/div>\n<p class=\"vcap\">&#8220;France&#8217;s Only Fighter That Could Rival Germany&#8217;s: Dewoitine D.520&#8221; by the aviation-history channel IHYLS (~54,000 subscribers; roughly 86,000 views as of 2026). Chosen as a clear, accurate English overview; figures in the film should be cross-checked against the sources listed below.<\/p>\n<\/div>\n<\/div>\n<div class=\"sec\">\n<div class=\"wrap\">\n<p class=\"kicker\">Global footprint<\/p>\n<h2>Where the Dewoitine D.520 flew and fought<\/h2>\n<p class=\"lead\">France designed and built it; France flew it in 1940 and, as Vichy, across the Mediterranean; and after the fall of France it turned up in German, Italian and Bulgarian markings before ending its days in French museums. Toggle the categories to see the type&#8217;s small but tangled global footprint.<\/p>\n<style>#d520-map-widget .d520-toggle:hover{border-color:#999!important}#d520-map-widget .d520-toggle:not(.active){color:#999!important;border-color:#E0E0E0!important}#d520-map-widget .d520-toggle:not(.active) .d520-check{opacity:0!important}#d520-map-widget .country{fill:#E8ECF1;stroke:#C8D0DA;stroke-width:.4;transition:fill .3s,stroke .3s}#d520-map-widget .country:hover{stroke-width:1;stroke:#999}#d520-map-widget .country.cat-migflug{fill:#5C91FF;stroke:#3A6FD8;stroke-width:.7}#d520-map-widget .country.cat-combat{fill:url(#camo-pattern);stroke:#4A6741;stroke-width:.7}#d520-map-widget .country.cat-current{fill:#555;stroke:#333;stroke-width:.7}#d520-map-widget .country.cat-former{fill:#C0C0C0;stroke:#999;stroke-width:.5}#d520-tooltip .tt-name{font-size:15px;font-weight:700;display:block;margin-bottom:4px}#d520-tooltip .tt-cat{font-size:11px;font-weight:400;color:#aaa;display:block;margin-bottom:6px;letter-spacing:.3px}#d520-tooltip .tt-fleet{font-size:12px;font-weight:600;color:#ccc;display:block;margin-bottom:4px}#d520-tooltip .tt-desc{font-size:12px;color:#ccc;line-height:1.5;display:block}@media(max-width:600px){#d520-map-widget .d520-toggle{padding:6px 10px!important;font-size:12px!important;gap:5px!important}#d520-map-widget .d520-toggle div{width:12px!important;height:12px!important}#d520-controls{gap:6px!important}#d520-count{font-size:13px!important}#d520-tooltip{max-width:calc(100vw - 32px)!important;font-size:12px!important;padding:8px 12px!important}#d520-tooltip .tt-name{font-size:14px!important}#d520-tooltip .tt-cat{font-size:10px!important}#d520-tooltip .tt-fleet{font-size:11px!important}#d520-tooltip .tt-desc{font-size:11px!important}}@media(max-width:400px){#d520-map-widget .d520-toggle{padding:5px 8px!important;font-size:11px!important;gap:4px!important}#d520-map-widget .d520-toggle div{width:10px!important;height:10px!important}#d520-controls{gap:4px!important}}<\/style>\n<div id=\"d520-map-widget\" style=\"font-family:'Gilroy semiBold','Gilroy regular',Helvetica,Arial,Lucida,sans-serif;max-width:1080px;width:100%;\">\n<div id=\"d520-map-container\" style=\"width:100%;position:relative\"><svg id=\"d520-map-svg\" style=\"width:100%;height:auto;display:block\"><\/svg><\/p>\n<div id=\"d520-tooltip\" style=\"position:fixed;background:#1a1a2e;color:#fff;padding:10px 16px;border-radius:6px;font-size:13px;font-weight:400;letter-spacing:.3px;pointer-events:auto;opacity:0;transition:opacity .15s;z-index:1000;max-width:360px;line-height:1.5\"><\/div>\n<\/div>\n<div id=\"d520-controls\" style=\"display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-start;margin-top:12px;\"><button class=\"d520-toggle active\" data-cat=\"migflug\" data-full=\"Origin &amp; Manufacturer (France)\" data-short=\"Origin\" style=\"display:flex;align-items:center;gap:6px;padding:8px 12px;border:2px solid #5C91FF;border-radius:0;background:#fff;cursor:pointer;font-family:inherit;font-size:13px;font-weight:600;color:#1a1a2e;white-space:nowrap;transition:all .25s\"><\/p>\n<div style=\"width:14px;height:14px;border-radius:3px;flex-shrink:0;background:#5C91FF\"><\/div>\n<p><span class=\"d520-label\">Origin &amp; Manufacturer (France)<\/span><span class=\"d520-check\" style=\"font-size:10px;opacity:1;transition:opacity .2s\">&#10003;<\/span><\/button><button class=\"d520-toggle active\" data-cat=\"combat\" data-full=\"1940 Battle of France &amp; Vichy\" data-short=\"1940 \/ Vichy\" style=\"display:flex;align-items:center;gap:6px;padding:8px 12px;border:2px solid #6B8E23;border-radius:0;background:#fff;cursor:pointer;font-family:inherit;font-size:13px;font-weight:600;color:#1a1a2e;white-space:nowrap;transition:all .25s\"><\/p>\n<div style=\"width:14px;height:14px;border-radius:3px;flex-shrink:0;background:linear-gradient(135deg,#4A6741 25%,#6B8E23 25%,#6B8E23 50%,#556B2F 50%,#556B2F 75%,#8B9D77 75%);background-size:8px 8px\"><\/div>\n<p><span class=\"d520-label\">1940 Battle of France &amp; Vichy<\/span><span class=\"d520-check\" style=\"font-size:10px;opacity:1;transition:opacity .2s\">&#10003;<\/span><\/button><button class=\"d520-toggle active\" data-cat=\"current\" data-full=\"Foreign &amp; Axis-Service Operators\" data-short=\"Axis-service\" style=\"display:flex;align-items:center;gap:6px;padding:8px 12px;border:2px solid #555;border-radius:0;background:#fff;cursor:pointer;font-family:inherit;font-size:13px;font-weight:600;color:#1a1a2e;white-space:nowrap;transition:all .25s\"><\/p>\n<div style=\"width:14px;height:14px;border-radius:3px;flex-shrink:0;background:#555\"><\/div>\n<p><span class=\"d520-label\">Foreign &amp; Axis-Service Operators<\/span><span class=\"d520-check\" style=\"font-size:10px;opacity:1;transition:opacity .2s\">&#10003;<\/span><\/button><button class=\"d520-toggle active\" data-cat=\"former\" data-full=\"Surviving Airframes\" data-short=\"Survivors\" style=\"display:flex;align-items:center;gap:6px;padding:8px 12px;border:2px solid #bbb;border-radius:0;background:#fff;cursor:pointer;font-family:inherit;font-size:13px;font-weight:600;color:#1a1a2e;white-space:nowrap;transition:all .25s\"><\/p>\n<div style=\"width:14px;height:14px;border-radius:3px;flex-shrink:0;background:#C0C0C0\"><\/div>\n<p><span class=\"d520-label\">Surviving Airframes<\/span><span class=\"d520-check\" style=\"font-size:10px;opacity:1;transition:opacity .2s\">&#10003;<\/span><\/button><\/div>\n<div id=\"d520-count\" style=\"text-align:left;font-size:14px;color:#666;margin-top:12px;line-height:1.7;width:100%\"><\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"sec\">\n<div class=\"wrap\">\n<p class=\"kicker\">Combat record<\/p>\n<h2>The Dewoitine D.520 by the numbers<\/h2>\n<div class=\"combat\">\n<div class=\"cstat\"><span>~100+<\/span><span>Confirmed victories in the Battle of France (wartime claims)<\/span><\/div>\n<div class=\"cstat\"><span>~85\u2013110<\/span><span>D.520s lost in 1940 to combat, bombing and overrun fields<\/span><\/div>\n<div class=\"cstat\"><span>1 groupe<\/span><span>Operational at the start of the German offensive<\/span><\/div>\n<div class=\"cstat\"><span>~400\u2013440<\/span><span>Built before the June 1940 armistice<\/span><\/div>\n<div class=\"cstat\"><span>~250<\/span><span>Seized by Germany in late 1942<\/span><\/div>\n<div class=\"cstat\"><span>~96<\/span><span>Delivered to Bulgaria from 1943<\/span><\/div>\n<\/div>\n<p class=\"fnote\">All figures are period estimates and wartime claims; scholarly sources differ, and totals should be read as ranges rather than exact counts.<\/p>\n<\/div>\n<\/div>\n<div class=\"sec\">\n<div class=\"wrap\">\n<p class=\"kicker\">Survivors<\/p>\n<h2>Surviving Dewoitine D.520s on display<\/h2>\n<p class=\"lead\">Only a handful of D.520s exist today, all in France \u2014 enough to judge the aircraft in the metal, but nowhere near enough to see one as a common sight.<\/p>\n<p>The best-known survivor is at the <b>Mus\u00e9e de l&#8217;Air et de l&#8217;Espace<\/b> at Le Bourget, north of Paris. Its aircraft, serial number 862, is displayed in the markings of GC III\/6 as the mount of the ace Pierre Le Gloan \u2014 a fitting choice given how closely his story is bound to the type. A second airframe has been the subject of a long restoration by the <b>Conservatoire de l&#8217;Air et de l&#8217;Espace d&#8217;Aquitaine<\/b> near Bordeaux, which returned a D.520 to airworthy condition in the mid-2000s, and further examples survive in French collections in varying states.<\/p>\n<p>That airworthy restoration is worth being precise about. A D.520 has flown in the modern era, which makes the type one of the very few 1940 French fighters ever to take to the air again \u2014 but there is no continuously flying D.520, and there is certainly no bookable ride in one anywhere in the world. Any future flights would be rare heritage events, not a passenger experience.<\/p>\n<p>Why so few? The answer is the same story of numbers and misfortune that shaped the aircraft&#8217;s whole career. Relatively few D.520s were built compared with the great production runs of the Spitfire or Bf 109; many were destroyed in 1940, worn out as trainers under three different air forces, or scrapped in the years after the war when a defeated France had little appetite for preserving the machines of its darkest hour. The handful that survived did so almost by accident, and their preservation today is a deliberate act of remembrance \u2014 a way of keeping honest company with a fighter whose record is proud, painful and complicated in equal measure.<\/p>\n<p>For anyone wanting to see one, the Mus\u00e9e de l&#8217;Air et de l&#8217;Espace at Le Bourget is the place to start: its GC III\/6 machine sits among the giants of French aviation history, small and purposeful, exactly as it would have looked dispersed at the edge of a grass airfield in the terrible spring of 1940.<\/p>\n<p>Standing in front of it, the numbers that fill this page resolve into something human-sized. This is not a strategic bomber or a supersonic interceptor; it is a compact, single-seat fighter a person could push by the tail, built to be flung into the sky by young men against overwhelming odds, its nose filled by an engine and a single cannon, its wings hiding four rifle-calibre guns. That modesty is the point. The D.520 asks to be judged not as a war-winner it never was, but as what it truly was \u2014 a fine, brave, unlucky little aeroplane, and the best France had when it mattered most.<\/p>\n<\/div>\n<\/div>\n<div class=\"sec\">\n<div class=\"wrap\">\n<p class=\"kicker\">Q&amp;A<\/p>\n<h2>Dewoitine D.520: your questions answered<\/h2>\n<div class=\"faq\">\n<details class=\"qa\" open>\n<summary>Can I fly in a Dewoitine D.520?<\/summary>\n<div class=\"a\">\n<p>No. Only a few D.520s survive, all of them in French museums, and while one example was restored to airworthy condition in the 2000s, there is no bookable flight in a Dewoitine D.520 anywhere \u2014 and MiGFlug does not offer one. It is a rare 1940 fighter, not a passenger ride.<\/p>\n<p>The good news is that you genuinely <b>can<\/b> fly in real fighter jets today. MiGFlug arranges flights in aircraft such as the L-39 Albatros, the Hawker Hunter and the MiG-29 \u2014 check availability and prices at <a href=\"https:\/\/migflug.com\/flights-prices\/\">migflug.com\/flights-prices<\/a>.<\/p>\n<\/div>\n<\/details>\n<details class=\"qa\">\n<summary>Was the Dewoitine D.520 a good fighter?<\/summary>\n<div class=\"a\">\n<p>Yes \u2014 it was the best fighter France fielded in 1940 and could meet the Messerschmitt Bf 109E on roughly even terms: fast for its engine power, agile, well-armed with a hub-firing 20 mm cannon, and well-liked by its pilots. Its weakness was not the aircraft but the situation \u2014 it arrived late and in tiny numbers, so it could not influence the outcome of the Battle of France.<\/p>\n<\/div>\n<\/details>\n<details class=\"qa\">\n<summary>Why did the D.520 fail to save France in 1940?<\/summary>\n<div class=\"a\">\n<p>Because there were almost none of them when it mattered. Only a single groupe was fully operational on 10 May 1940, and production had barely begun to flow. The Battle of France was decided by numbers, doctrine and the collapse of the ground campaign \u2014 no single fighter type, however good, could have reversed that. The D.520&#8217;s story is about timing, not quality.<\/p>\n<\/div>\n<\/details>\n<details class=\"qa\">\n<summary>Why did the Germans, Italians and Bulgarians fly the D.520?<\/summary>\n<div class=\"a\">\n<p>Because it was a modern fighter that fell into their hands. After the 1940 armistice, production continued under German oversight and the type equipped Vichy France. When Germany occupied the Vichy zone in late 1942 it seized around 250 aircraft and used them as advanced trainers; Italy operated captured examples; and Bulgaria received around 96 from 1943, flying them against American bombers. It is an awkward legacy in which a French fighter served several Axis air forces.<\/p>\n<\/div>\n<\/details>\n<details class=\"qa\">\n<summary>Did French pilots really fight the Allies in the D.520?<\/summary>\n<div class=\"a\">\n<p>Yes, and it is an uncomfortable but important part of the story. Under Vichy, D.520 units fought British and Commonwealth aircraft over Syria and Lebanon in 1941, and US and British aircraft over North Africa during Operation Torch in 1942. Skilled pilots on both sides were killed in these clashes between former allies \u2014 a consequence of France&#8217;s defeat and division, not of any choice made by the aircraft.<\/p>\n<\/div>\n<\/details>\n<details class=\"qa\">\n<summary>How many Dewoitine D.520s were built?<\/summary>\n<div class=\"a\">\n<p>Roughly 900 in total, though sources vary and the number should be treated as an estimate. Around 400\u2013440 were completed before the June 1940 armistice, with the remainder built afterward under Vichy and German oversight into the war years. The Mus\u00e9e de l&#8217;Air cites 403 before the fall of France and 488 more thereafter, for about 891.<\/p>\n<\/div>\n<\/details>\n<details class=\"qa\">\n<summary>How fast was the Dewoitine D.520?<\/summary>\n<div class=\"a\">\n<p>Around 530\u2013540 km\/h (roughly 330 mph) at about 5,500 m, with sources commonly citing figures near 535 km\/h \u2014 the Mus\u00e9e de l&#8217;Air quotes 540 km\/h. That made it roughly 45\u201350 km\/h faster than the MS.406 it supplemented and fast enough to trade blows with the Bf 109E, though it gave away a little top-end speed to the German fighter. Treat any single figure as an approximation of a wartime aircraft.<\/p>\n<\/div>\n<\/details>\n<details class=\"qa\">\n<summary>What engine and armament did the D.520 have?<\/summary>\n<div class=\"a\">\n<p>A single liquid-cooled Hispano-Suiza 12Y V-12 of roughly 850\u2013920 hp drove it. Its armament was a 20 mm HS.404 cannon mounted in the engine and firing through the propeller hub \u2014 accurate and hard-hitting, with about 60 rounds \u2014 backed by four 7.5 mm MAC 1934 machine guns in the wings. The hub cannon was the aircraft&#8217;s defining feature and a French speciality of the period.<\/p>\n<\/div>\n<\/details>\n<details class=\"qa\">\n<summary>Are there any Dewoitine D.520s left today?<\/summary>\n<div class=\"a\">\n<p>Yes, but only a handful, and all in France. The best-known is at the Mus\u00e9e de l&#8217;Air et de l&#8217;Espace at Le Bourget, displayed in GC III\/6 markings as Pierre Le Gloan&#8217;s aircraft. Another was restored to airworthy condition by the Conservatoire de l&#8217;Air et de l&#8217;Espace d&#8217;Aquitaine in the mid-2000s, and further examples survive in French collections. None is available for flights, and MiGFlug does not offer a D.520.<\/p>\n<\/div>\n<\/details>\n<details class=\"qa\">\n<summary>Did the Dewoitine D.520 fight the Messerschmitt Bf 109?<\/summary>\n<div class=\"a\">\n<p>Yes \u2014 that was its main opponent. During the Battle of France in May\u2013June 1940, D.520 squadrons repeatedly engaged Luftwaffe Bf 109Es and Bf 110s, and their claimed victories include a number of Bf 109s. The two fighters were closely matched: the Bf 109E was a little faster and climbed better, while the D.520 turned more tightly and carried an accurate hub cannon. Outcomes usually came down to numbers, height and tactics rather than the machines.<\/p>\n<\/div>\n<\/details>\n<details class=\"qa\">\n<summary>How does the D.520 compare to the Spitfire?<\/summary>\n<div class=\"a\">\n<p>The Spitfire Mk I was faster (around 580 km\/h versus roughly 535) and carried eight machine guns, but the D.520 answered with a hard-hitting 20 mm hub cannon and tight, honest handling. The bigger difference was numbers: Britain fielded hundreds of Spitfires and Hurricanes in 1940, while France had only a single fully operational D.520 groupe. The aircraft were comparable; the fleets were not. You can compare both in this museum \u2014 see our <a href=\"https:\/\/migflug.com\/aircraft\/supermarine-spitfire\/\">Supermarine Spitfire<\/a> page.<\/p>\n<\/div>\n<\/details>\n<details class=\"qa\">\n<summary>Who designed the Dewoitine D.520?<\/summary>\n<div class=\"a\">\n<p>It came from the design bureau of \u00c9mile Dewoitine, one of the great figures of French aviation, whose fighters ran from the biplane era to the eve of the jet age. By the time the D.520 was built his own company had been nationalised, so the aircraft was produced by the state combine that absorbed his team. Dewoitine&#8217;s post-war career was clouded by collaboration accusations, but the fighter bearing his name is remembered for its design.<\/p>\n<\/div>\n<\/details>\n<\/div>\n<\/div>\n<\/div>\n<p> <script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Can I fly in a Dewoitine D.520?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. Only a few D.520s survive, all in French museums; although one example was restored to airworthy condition in the 2000s, there is no bookable flight in a Dewoitine D.520 anywhere and MiGFlug does not offer one. However, you genuinely can fly in real fighter jets today, such as the L-39 Albatros, Hawker Hunter and MiG-29 \u2014 see migflug.com\/flights-prices.\"}},{\"@type\":\"Question\",\"name\":\"Was the Dewoitine D.520 a good fighter?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. It was the best fighter France fielded in 1940 and could meet the Messerschmitt Bf 109E on roughly even terms: fast for its engine power, agile, armed with a hub-firing 20 mm cannon and four machine guns, and well-liked by its pilots. Its weakness was that it arrived late and in tiny numbers, so it could not change the outcome of the Battle of France.\"}},{\"@type\":\"Question\",\"name\":\"Why did the D.520 fail to save France in 1940?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Because there were almost none of them when it mattered. Only a single groupe was fully operational on 10 May 1940 and production had barely begun. The Battle of France was decided by numbers, doctrine and the collapse of the ground campaign, so no single fighter type could have reversed it. 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That made it roughly 45 to 50 km\/h faster than the MS.406 and fast enough to trade blows with the Bf 109E, though it gave away a little top-end speed to the German fighter.\"}},{\"@type\":\"Question\",\"name\":\"What engine and armament did the Dewoitine D.520 have?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"A single liquid-cooled Hispano-Suiza 12Y V-12 of roughly 850 to 920 hp. Its armament was a 20 mm HS.404 cannon mounted in the engine and firing through the propeller hub, with about 60 rounds, backed by four 7.5 mm MAC 1934 machine guns in the wings.\"}},{\"@type\":\"Question\",\"name\":\"Are there any Dewoitine D.520s left today?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes, but only a handful, all in France. The best-known is at the Mus\u00e9e de l'Air et de l'Espace at Le Bourget in GC III\/6 markings as Pierre Le Gloan's aircraft; another was restored to airworthy condition by the Conservatoire de l'Air et de l'Espace d'Aquitaine in the mid-2000s. 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MiGFlug puts you in the cockpit of real, flying military jets, from Cold War trainers to supersonic interceptors.<\/p>\n<div class=\"ctacar\">\n<div class=\"ctacard\">\n<div style=\"height:6px;background:#5C91FF\"><\/div>\n<div class=\"cc\">\n<h3>Fighter Jet Flights<\/h3>\n<p>Take the controls of a real ex-military jet with an experienced fighter pilot.<\/p>\n<p><a class=\"ctabtn\" href=\"https:\/\/migflug.com\/flights-prices\/\">See flights &amp; prices<\/a><\/div>\n<\/div>\n<div class=\"ctacard\">\n<div style=\"height:6px;background:#5C91FF\"><\/div>\n<div class=\"cc\">\n<h3>L-39 Albatros<\/h3>\n<p>The classic jet trainer \u2014 aerobatics and low-level fun, in several countries.<\/p>\n<p><a class=\"ctabtn\" href=\"https:\/\/migflug.com\/flights-prices\/\">See flights &amp; prices<\/a><\/div>\n<\/div>\n<div class=\"ctacard\">\n<div style=\"height:6px;background:#5C91FF\"><\/div>\n<div class=\"cc\">\n<h3>MiG-29 Fulcrum<\/h3>\n<p>Ride a genuine air-superiority fighter toward the edge of space.<\/p>\n<p><a class=\"ctabtn\" href=\"https:\/\/migflug.com\/flights-prices\/\">See flights &amp; prices<\/a><\/div>\n<\/div>\n<div class=\"ctacard\">\n<div style=\"height:6px;background:#5C91FF\"><\/div>\n<div class=\"cc\">\n<h3>Supersonic experiences<\/h3>\n<p>Break the sound barrier in a real military jet.<\/p>\n<p><a class=\"ctabtn\" href=\"https:\/\/migflug.com\/flights-prices\/\">See flights &amp; prices<\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"sec\">\n<div class=\"wrap\">\n<p class=\"kicker\">More from the museum<\/p>\n<h2>More WWII fighters to explore<\/h2>\n<div class=\"relgrid\"><a class=\"relcard\" href=\"https:\/\/migflug.com\/aircraft\/hawker-hurricane\/\"><img data-opt-id=785683113  data-opt-src=\"https:\/\/ml5psubhxdln.i.optimole.com\/cb:78--.b845\/w:768\/h:573\/q:96\/f:best\/https:\/\/migflug.com\/wp-content\/uploads\/2026\/07\/hawker-hurricane-mk-i-egypt-1940.jpg\"  decoding=\"async\" src=\"data:image/svg+xml,%3Csvg%20viewBox%3D%220%200%20768%20573%22%20width%3D%22768%22%20height%3D%22573%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Crect%20width%3D%22768%22%20height%3D%22573%22%20fill%3D%22transparent%22%2F%3E%3C%2Fsvg%3E\" alt=\"Hawker Hurricane\"><span class=\"rc\"><span class=\"rt\">Hawker Hurricane<\/span><span class=\"rd\">The workhorse that won the Battle of Britain<\/span><\/span><\/a><a class=\"relcard\" href=\"https:\/\/migflug.com\/aircraft\/supermarine-spitfire\/\"><img data-opt-id=2078736746  data-opt-src=\"https:\/\/ml5psubhxdln.i.optimole.com\/cb:78--.b845\/w:768\/h:806\/q:96\/f:best\/https:\/\/migflug.com\/wp-content\/uploads\/2026\/08\/supermarine-spitfire-in-flight.jpg\"  decoding=\"async\" src=\"data:image/svg+xml,%3Csvg%20viewBox%3D%220%200%20768%20806%22%20width%3D%22768%22%20height%3D%22806%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Crect%20width%3D%22768%22%20height%3D%22806%22%20fill%3D%22transparent%22%2F%3E%3C%2Fsvg%3E\" alt=\"Supermarine Spitfire\"><span class=\"rc\"><span class=\"rt\">Supermarine Spitfire<\/span><span class=\"rd\">Britain&#8217;s elegant, war-long thoroughbred<\/span><\/span><\/a><a class=\"relcard\" href=\"https:\/\/migflug.com\/aircraft\/messerschmitt-bf-109\/\"><img data-opt-id=1426093132  data-opt-src=\"https:\/\/ml5psubhxdln.i.optimole.com\/cb:78--.b845\/w:768\/h:519\/q:96\/f:best\/https:\/\/migflug.com\/wp-content\/uploads\/2026\/08\/messerschmitt-bf-109-in-flight.jpg\"  decoding=\"async\" src=\"data:image/svg+xml,%3Csvg%20viewBox%3D%220%200%20768%20519%22%20width%3D%22768%22%20height%3D%22519%22%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%3E%3Crect%20width%3D%22768%22%20height%3D%22519%22%20fill%3D%22transparent%22%2F%3E%3C%2Fsvg%3E\" alt=\"Messerschmitt Bf 109\"><span class=\"rc\"><span class=\"rt\">Messerschmitt Bf 109<\/span><span class=\"rd\">The D.520&#8217;s great rival over France<\/span><\/span><\/a><\/div>\n<\/div>\n<\/div>\n<div class=\"sec\">\n<div class=\"wrap\">\n<p class=\"kicker\">Sources<\/p>\n<h2>Dewoitine D.520: sources &amp; further reading<\/h2>\n<div class=\"srcgrid\">\n<div class=\"srcitem\"><b>Mus\u00e9e de l&#8217;Air et de l&#8217;Espace, Le Bourget<\/b><span>Collection notes on its D.520 (serial 862, GC III\/6 \/ Le Gloan) \u2014 performance, production and service history.<\/span><\/div>\n<div class=\"srcitem\"><b>Conservatoire de l&#8217;Air et de l&#8217;Espace d&#8217;Aquitaine (CAEA)<\/b><span>Restoration record of the airworthy D.520 near Bordeaux and its return to flight in the 2000s.<\/span><\/div>\n<div class=\"srcitem\"><b>HistoryOfWar.org<\/b><span>Specification and combat-record summary for the D.520, including Battle of France claim and loss figures.<\/span><\/div>\n<div class=\"srcitem\"><b>Plane-Encyclopedia<\/b><span>Detailed operator-by-operator account: Vichy, German, Italian, Bulgarian and Free-French service.<\/span><\/div>\n<div class=\"srcitem\"><b>The Little Aviation Museum<\/b><span>Vichy-era D.520 profile and unit-level operational detail (December 1941).<\/span><\/div>\n<div class=\"srcitem\"><b>MilitaryFactory.com<\/b><span>Cross-reference for dimensions, weights and powerplant figures.<\/span><\/div>\n<div class=\"srcitem\"><b>SilverHawkAuthor \u2014 Warplanes of France<\/b><span>Narrative history of the D.520&#8217;s design, combat and preservation.<\/span><\/div>\n<div class=\"srcitem\"><b>MiGFlug \u2014 Fighter Aircraft Combat Statistics<\/b><span>MiGFlug&#8217;s own combat-record page for the Dewoitine D.520, for kill\/loss context.<\/span><\/div>\n<div class=\"srcitem\"><b>Smithsonian National Air and Space Museum<\/b><span>Reference context on the Hispano-Suiza 12Y engine family and inter-war French fighter development.<\/span><\/div>\n<div class=\"srcitem\"><b>MilitaryMachine.com \u2014 D.520<\/b><span>Overview of specifications, service history and combat record, cross-referenced for figures.<\/span><\/div>\n<div class=\"srcitem\"><b>Plane Dave \/ SilverHawkAuthor field notes<\/b><span>Preservation and unit-history detail on surviving and restored D.520 airframes.<\/span><\/div>\n<div class=\"srcitem\"><b>Wikimedia Commons<\/b><span>Image source for the historical and museum photographs used above, each credited and licensed in its caption.<\/span><\/div>\n<\/div>\n<\/div>\n<\/div>\n<p> <script src=\"https:\/\/cdnjs.cloudflare.com\/ajax\/libs\/d3\/7.8.5\/d3.min.js\"><\/script> <script 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It arrived too late and in too few numbers to save the country, yet its pilots proved it could stand toe-to-toe with the Messerschmitt Bf 109. ~535 km\/hTop speed 1 \u00d7 20 mmHub cannon + 4 MGs ~900Built [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":20910,"parent":15960,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"editor_notices":[],"footnotes":""},"class_list":["post-20909","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Dewoitine D.520: France&#039;s Best Fighter of 1940 | MiGFlug<\/title>\n<meta name=\"description\" content=\"The Dewoitine D.520 was France&#039;s best fighter of 1940: fast, cannon-armed and agile \u2014 but too late and too few to change the Battle of France.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/migflug.com\/es\/aeronave\/dewoitine-d-520\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Dewoitine D.520: France&#039;s Best Fighter of 1940 | MiGFlug\" \/>\n<meta property=\"og:description\" content=\"The Dewoitine D.520 was France&#039;s best fighter of 1940: fast, cannon-armed and agile \u2014 but too late and too few to change the Battle of France.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/migflug.com\/es\/aeronave\/dewoitine-d-520\/\" \/>\n<meta property=\"og:site_name\" content=\"MiGFlug\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/MiGFlug\/\" \/>\n<meta property=\"og:image\" content=\"https:\/\/ml5psubhxdln.i.optimole.com\/cb:78--.b845\/w:auto\/h:auto\/q:96\/f:best\/https:\/\/migflug.com\/wp-content\/uploads\/2026\/08\/dewoitine-d-520-fighter-gc-iii-6-scaled.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2560\" \/>\n\t<meta property=\"og:image:height\" content=\"1454\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:site\" content=\"@migflug\" \/>\n<meta name=\"twitter:label1\" content=\"Tiempo de lectura\" \/>\n\t<meta name=\"twitter:data1\" content=\"62 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/migflug.com\\\/aircraft\\\/dewoitine-d-520\\\/\",\"url\":\"https:\\\/\\\/migflug.com\\\/aircraft\\\/dewoitine-d-520\\\/\",\"name\":\"Dewoitine D.520: France's Best Fighter of 1940 | MiGFlug\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/migflug.com\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/migflug.com\\\/aircraft\\\/dewoitine-d-520\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/migflug.com\\\/aircraft\\\/dewoitine-d-520\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\/\\/migflug.com\\/wp-content\\/uploads\\/2026\\/08\\/dewoitine-d-520-fighter-gc-iii-6-scaled.jpg\",\"datePublished\":\"2026-08-10T15:00:17+00:00\",\"description\":\"The Dewoitine D.520 was France's best fighter of 1940: fast, cannon-armed and agile \u2014 but too late and too few to change the Battle of France.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/migflug.com\\\/aircraft\\\/dewoitine-d-520\\\/#breadcrumb\"},\"inLanguage\":\"es\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/migflug.com\\\/aircraft\\\/dewoitine-d-520\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"es\",\"@id\":\"https:\\\/\\\/migflug.com\\\/aircraft\\\/dewoitine-d-520\\\/#primaryimage\",\"url\":\"https:\\/\\/migflug.com\\/wp-content\\/uploads\\/2026\\/08\\/dewoitine-d-520-fighter-gc-iii-6-scaled.jpg\",\"contentUrl\":\"https:\\/\\/migflug.com\\/wp-content\\/uploads\\/2026\\/08\\/dewoitine-d-520-fighter-gc-iii-6-scaled.jpg\",\"width\":2560,\"height\":1454,\"caption\":\"Dewoitine D.520 preserved in the markings of GC III\\\/6. 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