The confusion is real, and it is worth untangling once. The manufacturer’s designation was DB-7 (Douglas Bomber 7), the export label under which France and then Britain first bought it. The U.S. Army Air Forces designation was A-20, and the Americans called every version the Havoc.

The British, who received the largest early batches, split the name by job. Day-bomber versions were the Boston (Boston I through V). The versions converted into night fighters and night intruders — often with a solid nose full of guns, radar, or the Turbinlite searchlight — were the Havoc. So in RAF service the same basic aircraft could be a Boston or a Havoc depending on what it was doing that night.

Add the Royal Australian Air Force, which called all of its aircraft Bostons regardless of role, and the U.S. Navy’s handful of BD utility aircraft, and you have one of the most name-tangled aeroplanes of the war. On this page “A-20 Havoc” is used as the umbrella term, with Boston and Havoc noted where the distinction matters.

It is the single most surprising fact about the aircraft: the biggest user of the American A-20 was the Soviet Union. Under Lend-Lease, about 3,414 Havocs were delivered to the USSR, and roughly 2,771 saw service with Soviet units — more than a third of all A-20s built, and more than either the USAAF or the RAF operated.

Soviet crews valued the Havoc for exactly the qualities Western pilots did: speed, toughness and easy handling, plus a roomy fuselage and reliable radial engines. The VVS used them as day and night bombers, as night intruders, and — distinctively — as torpedo bombers and mine-layers with the naval air arms over the Baltic and Black Seas. Some were re-engined and re-armed locally to suit Soviet needs.

This Soviet chapter is often skipped in Western accounts, but it is central to the aircraft’s story. If you want to understand where most Havocs actually fought, the answer is the Eastern Front. The operations map further down this page shows the USSR as the standout operator for exactly this reason.

Because so many American twins of the era used Pratt & Whitney’s R-2800 Double Wasp, the A-20 is often mis-described as an R-2800 aircraft. It was not. The main production Havocs were powered by the Wright R-2600 Twin Cyclone, a fourteen-cylinder twin-row radial of around 1,600 horsepower — the same engine family that powered the B-25 Mitchell and the TBF Avenger.

The very earliest aircraft — the French DB-7 and the RAF Havoc I — used the smaller Pratt & Whitney R-1830 Twin Wasp of roughly 1,000–1,100 hp. The switch to the more powerful Wright R-2600 with the DB-7A / Havoc II and the A-20 proper is what gave the type its characteristic speed.

Getting the engine right matters for identification and for accuracy: any source that lists an R-2800 for the A-20 has confused it with the Martin B-26 Marauder, which really did use the Double Wasp.

A typical A-20 carried a crew of three: a pilot, a bombardier or nose gunner in front, and a gunner aft covering the upper and lower rear positions. On the low-level strafer versions the “bombardier” position gave way to a solid gun nose, and the front-seat crewman’s job shifted from aiming bombs to little more than riding along, because the pilot fired the fixed guns.

The narrow fuselage meant the crew could not move between stations in flight — each man was effectively sealed into his own compartment. That was a real drawback if someone was wounded, but it kept the aircraft slim and fast. Soviet aircraft sometimes carried an extra crewman, and night-fighter Havocs added a radar operator.

The pilot’s view over the tricycle nose and the aircraft’s docile handling made the A-20 one of the easier twin-engine combat types to convert onto — a quiet but important advantage when thousands of new crews had to be trained fast.

The family began with the French DB-7 and the closely related DB-7A/DB-7B, known in RAF service as the Boston I–III (bombers) and Havoc I–II (night fighters and intruders). Early Havocs included radar-equipped night fighters and the searchlight-carrying Turbinlite conversions.

The U.S. Army versions ran A-20, A-20A, A-20B and A-20C, leading to the definitive A-20G — the most-built version, with a solid gun nose and heavier armament, optimised for low-level attack. The A-20H was a more powerful G; the A-20J and A-20K restored a frameless glazed nose for lead bombers guiding formations (the RAF called these Boston IV and V).

Dedicated night fighters were designated P-70 in USAAF service, and a small number of utility aircraft served the U.S. Navy as the BD. It is a large, sometimes bewildering family — but the through-line is a single, adaptable airframe stretched across bombing, strafing, night-fighting and intruder work.

Wartime unit costs for the A-20 are not recorded consistently across sources, and figures that do appear roll airframe, engines and government-furnished equipment together in ways that resist comparison with modern list prices. A figure in the region of $100,000 per aircraft is sometimes cited for the mid-war period; treat it as a rough approximation rather than an audited price.

A meaningful modern “cost per flight hour” does not exist for the A-20, because effectively none is operated today. The last airworthy example in the world — a privately owned A-20G in the United States — suffered an engine failure and crash-landed at an air show in February 2025, leaving no flying Havoc anywhere. With no airworthy aircraft, there is no ownership or charter market to price.

The Pacific is where the A-20 became a legend. The theatre’s vast distances and dispersed Japanese targets rewarded fast, low-flying aircraft that could strike hard without warning. American engineers — most famously Paul “Pappy” Gunn — field-modified A-20s with solid noses packed with forward-firing .50-calibre machine guns, turning a light bomber into a devastating strafer.

Attacking at masthead height, A-20s of the 3rd and 312th Bomb Groups strafed airfields and shipping and dropped parachute-retarded “parafrag” bombs that let the aircraft escape the blast. The technique was brutally effective against parked aircraft and merchant vessels, and it made the low-level A-20 one of the most feared Allied aircraft in the South-West Pacific.

It was also costly: at treetop height there was no margin for error and heavy anti-aircraft fire took a steady toll. But the results — airfields wrecked, convoys shattered — confirmed the A-20 as a superb tactical strike aircraft when flown low and fast.

The largest concentration of A-20 combat anywhere was on the Eastern Front. From 1942, Lend-Lease Havocs reached the Soviet Union in large numbers, and the VVS committed them across every major operation from Stalingrad to Berlin.

Soviet crews used the Havoc with great flexibility: as a conventional day bomber, as a night intruder against German airfields and columns, and — in a role Western air forces rarely used it for — as a torpedo bomber and mine-layer with the Baltic and Black Sea fleet air arms. Soviet armourers frequently re-worked the aircraft’s guns and equipment to local standards.

That the biggest user of an American attack bomber was the Soviet Union is one of the quiet truths of the air war. It reflects both the scale of Lend-Lease and the genuine quality of the aircraft: the VVS could have rejected it, and instead flew it in their thousands.

In the west the aircraft fought under British, Commonwealth, French and American colours. RAF Bostons began cross-Channel daylight raids as early as 1941, and by 1943–44 Ninth Air Force A-20s were a major part of the tactical bombing force preparing the ground for the invasion of Europe.

In the Mediterranean, RAF, South African and Free French Boston squadrons attacked shipping, bridges and airfields from the Western Desert to Italy. On D-Day itself, Bostons and Havocs bombed coastal batteries and laid smoke screens to shield the landing beaches, while intruder Havocs harassed German movement inland by night.

It was unglamorous, relentless tactical work — the daily grind of interdiction and close support that wins campaigns without making headlines. The A-20 was very good at it.

The single most important tactical development in the A-20’s career was the solid gun nose. Standard bombers aimed their loads from altitude through a bombardier; in the Pacific, engineers replaced the glazed nose with a battery of fixed forward-firing .50-calibre machine guns, so the pilot could strafe as he attacked.

Combined with parachute-retarded fragmentation bombs — which fell slowly enough for the aircraft to clear the blast — the gun-nosed A-20 could sweep an airfield or a convoy in a single devastating low pass. Douglas eventually built the arrangement in as standard on the A-20G, the most-produced version.

It turned a competent light bomber into one of the outstanding low-level attack aircraft of the war, and it is the role most people picture when they think of the Havoc.

Britain used the Havoc name specifically for the night-fighting and intruder versions. Early Havoc I and II night fighters carried airborne interception radar and a nose full of guns to hunt German bombers over England during the Blitz.

Intruder Havocs and Bostons took the fight the other way — roaming over occupied France and the Low Countries at night to catch enemy aircraft near their own airfields and to attack trains, transport and airfields. It was dangerous, lonely work that tied down German defences far from the front.

The night-fighter Havoc was never as successful as purpose-built types that followed, but the intruder role suited the aircraft’s speed and endurance well, and Boston and Havoc intruders remained active over Europe for much of the war.

The most unusual Havoc variant was the Turbinlite. In place of nose guns it carried a 2.7-million-candlepower searchlight and airborne radar. The idea was for the Turbinlite Havoc to find an enemy bomber on radar, illuminate it with the searchlight, and let an accompanying Hawker Hurricane make the kill.

It was ingenious on paper and clumsy in practice. Coordinating a radar-equipped searchlight aircraft with a separate fighter in the dark proved extremely difficult, and results were poor. Thirty-one aircraft were converted, and the Turbinlite flights were formed into squadrons before being disbanded in early 1943.

We include it honestly because it matters: not every wartime idea worked, and the Turbinlite is a good reminder that the Havoc’s real strengths lay in attack and intrusion, not in this particular experiment.

The United States tried its own night-fighter conversion, the P-70. Around sixty A-20s were fitted with radar and a ventral gun tray and sent to the Pacific to counter Japanese night raiders.

The P-70 was a stopgap. It lacked the altitude performance to catch high-flying intruders, and it scored only a couple of confirmed kills before being replaced by the purpose-designed Northrop P-61 Black Widow. All P-70s were retired by the end of the war.

Like the Turbinlite, the P-70 shows the limits of adapting a light bomber into an interceptor — and by contrast underlines how good the A-20 was in the roles that suited it.

The A-20 and the B-25 Mitchell shared the same Wright R-2600 engine and often the same low-level tactics, so comparisons are natural. The B-25 was larger, carried more, and had greater range; the A-20 was smaller, a touch faster, and widely regarded as the nicer aircraft to fly.

In the Pacific both were turned into heavily gunned strafers, and both did superb low-level work. Where the Mitchell’s size and range made it the more strategically useful medium bomber, the Havoc’s agility and easy handling made it a favourite for fast, close-in tactical strikes.

They were complementary rather than rivals — and, tellingly, the Soviet Union operated large numbers of both under Lend-Lease.

The Havoc’s defining quality in the air was balance. It was quick — over 500 km/h — yet its moderate wing loading and tricycle gear made it approachable for pilots converting from single-engine types. It could be flown low and hard with confidence.

Its structural strength suited the battering of masthead attacks, and its handling stayed honest even on one engine, an important safety margin that some contemporaries lacked. Crews trusted it, and trust translated into effectiveness.

The A-20’s two Wright R-2600 Twin Cyclones were powerful and generally reliable, but like all big radials they demanded constant care, especially in the dust of Pacific and desert strips. Ground crews changed cylinders, patched flak damage and kept aircraft serviceable in punishing conditions.

The type’s reputation for availability — being ready to fly when needed — owed as much to that unglamorous flight-line work as to the design itself. It is part of why so many air forces, from the USAAF to the VVS, could keep large A-20 fleets in action.

France was the launch customer for the production Havoc. The French DB-7, powered by Pratt & Whitney R-1830 Twin Wasps, was ordered in quantity in 1939 as France scrambled to modernise its air force. A number reached French units, and some flew briefly against the German invasion in 1940.

When France fell, the balance of the French order — and follow-on contracts — were taken over by Britain. This is why the aircraft entered large-scale combat in RAF rather than USAAF markings, and why so much early Havoc and Boston history is British and Commonwealth rather than American.

The French link closed a circle later in the war, when rebuilt Free French squadrons flew Bostons in the Mediterranean and over their own liberated country.

For the RAF, the Boston was a significant step up from the Bristol Blenheim it largely replaced in the day-bomber role. It was faster, carried a useful bomb load, and was better able to defend itself and survive over heavily defended targets.

Boston squadrons of No. 2 Group carried out fast, low-level and medium-altitude daylight raids over occupied Europe from 1941, attacking power stations, docks, airfields and industrial targets. The type’s speed and handling made it well suited to the tip-and-run tactics these missions demanded.

The upgrade mattered: the Boston gave the RAF a modern, capable light bomber at a moment when its earlier types were dangerously outclassed.

The great majority of A-20s — about 7,098 — were built by Douglas, largely at Santa Monica and Long Beach in California. A further 380 were built by Boeing, bringing the commonly cited total to around 7,478 (some references give roughly 7,385).

This scale of production, spread across more than one manufacturer, is part of why the aircraft could be supplied so generously to Allied air forces. A cheap, quick-to-build light bomber that several factories could turn out in quantity was exactly what Lend-Lease needed.

It also explains the aircraft’s ubiquity: with thousands built, the Havoc could equip American, British, Commonwealth, French and — above all — Soviet units simultaneously.

The scale of Soviet deliveries — about 3,414 aircraft — reflected both supply and suitability. Lend-Lease was pouring American equipment into the USSR, and the A-20 was cheap, available in quantity, and well matched to the Soviet style of tactical air war: close support of ground forces, interdiction, and night harassment.

The Havoc’s toughness and easy handling suited the demanding conditions of the Eastern Front, and its radial engines were relatively straightforward to maintain in the field. Soviet units valued it enough to keep it in front-line service for the rest of the war.

The upshot is one of the war’s more striking statistics: the biggest operator of an American light bomber was the Soviet Union — a fact that says as much about the aircraft’s quality as about the politics of Lend-Lease.

One of the most distinctive Soviet uses of the Havoc was as a naval strike aircraft. Baltic and Black Sea fleet air units flew A-20s as torpedo bombers and mine-layers against German and Axis shipping.

It was not a role the aircraft had been designed for, echoing the improvised torpedo work other twins were sometimes pressed into. But the Havoc’s speed and load-carrying made it a capable maritime attacker in Soviet hands, and it operated in this role with some success.

This naval dimension is almost entirely absent from Western histories of the type, which tend to focus on the Pacific strafers and the European Bostons — another reason the Soviet story is worth telling in full.

Soviet Havocs were often not left as delivered. Front-line units and repair depots altered armament, added crew positions, and adapted equipment to Soviet standards and tactics. Defensive gun arrangements in particular were frequently reworked.

These modifications reflected a broader pattern: Lend-Lease aircraft were absorbed into a very different air force with its own doctrine, and were changed to fit it. The Soviet A-20 was, in a real sense, its own variant family, distinct from the USAAF versions.

It is a reminder that an aircraft’s story does not end at the factory gate — how it was used, and by whom, is just as much a part of what it was.

Because both are Douglas attack bombers with similar names, the A-20 Havoc and A-26 Invader are often confused. A few cues help. The A-20 is the earlier, slimmer aircraft, with a high-set wing, a narrow fuselage and, on the strafer versions, a stepped cockpit and solid gun nose. It is usually pictured in 1941–45 settings.

The A-26 Invader is later, larger and cleaner, with a low-set wing, a broad fuselage and a more modern look; it appears in late-war and post-war photographs, and — after 1948 — under the designation B-26. If the caption mentions Korea or Vietnam, you are looking at the Invader, not the Havoc.

And neither should be confused with the Martin B-26 Marauder, a different manufacturer’s aircraft that used the R-2800 engine and shared only the post-war designation with the Invader.

Australian Boston operations produced one of the type’s most famous stories. Flight Lieutenant William “Bill” Newton of No. 22 Squadron RAAF flew repeated low-level Boston attacks against Japanese targets in New Guinea in 1943.

Shot down and captured after pressing home his attacks with great determination, Newton was executed by his captors. He was posthumously awarded the Victoria Cross — the only one awarded to an Australian airman in the South-West Pacific — and remains a symbol of the courage demanded by low-level Boston operations.

The RAAF continues to call all of its aircraft Bostons, and preserves examples at Amberley and Point Cook, keeping the Australian side of the story alive.

For an aircraft built in such numbers and used so widely, the A-20 has a surprisingly modest public profile. Several things explain it. It was a tactical light bomber rather than a glamorous fighter or a war-winning heavy, so it attracted less post-war attention than the B-17 or the Spitfire.

Its confusing tangle of names — Havoc, Boston, DB-7 — scattered its story across different national histories. Its largest operator, the Soviet Union, sat behind the Iron Curtain for decades, so that vital chapter went largely untold in the West. And it was scrapped quickly after 1945, leaving few survivors to keep it in the public eye.

This page tries to correct that a little: the Havoc was one of the most useful, most widely flown and most genuinely international aircraft of the whole war, and it deserves to be remembered as such.