When the CR.32 first flew in 1933, the fighter world was genuinely divided. Monoplanes promised speed, but early examples were tricky to fly and their structures were still unproven; biplanes offered agility, strength and docile handling that pilots and air staffs trusted. The CR.32 was the biplane school’s finest argument — fast enough for its day, phenomenally manoeuvrable and rugged.

What tipped the balance was combat experience — and here the CR.32’s own record proved double-edged. Its dominance over Spain was read by many in Italy as proof that the agile dogfighter still ruled. Others, watching the fast Polikarpov I-16 dive in, fire and climb away at will, drew the opposite conclusion. Both were, in a sense, looking at the same aircraft. This debate is why the CR.32 matters far beyond its own service record.

The CR.32’s reputation as the “king” of the Spanish air war is well earned but needs care. Nationalist and Italian claims from that chaotic, poorly documented conflict are difficult to reconcile with Republican records, and victory tallies from the 1930s should be treated as approximate. What is not in doubt is that the type was strong, dependable and superbly agile, and that in skilled hands it was a genuinely dangerous opponent that could out-turn the I-15 and frustrate the faster I-16.

Its weaknesses were equally real: it was slow by the standards of the coming decade and lightly armed with just two machine guns. The honest verdict is that the CR.32 was probably the best of the late biplane fighters — and that being the best of a type the future was leaving behind is a limited kind of triumph.

Almost every account of the CR.32, friend or foe, returns to the same word: agility. The aircraft could enter and hold an extraordinarily tight turn, reverse quickly, and remain controllable to the edge of a stall. For a well-trained pilot that meant a defensive fight was rarely hopeless — a CR.32 that could not out-run an attacker could very often out-turn it, forcing the faster aircraft to overshoot.

The catch, already visible over Spain, was that a faster monoplane did not have to accept the turning fight. It could dive in from above, fire, and zoom-climb back out of reach, choosing when to engage. The CR.32 was the master of a game its newest opponents could simply decline to play — the central dilemma of every agile biplane in the monoplane age.

Unlike modern jets, the CR.32 left almost no reliable cost-per-flight-hour record. It was a mid-1930s design produced in an era before such figures were tracked or published in the way they are today, and its operators — Fascist Italy, Nationalist Spain and a scattering of export customers — kept records that were incomplete then and are fragmentary now. Any specific hourly cost quoted for a CR.32 should be treated with suspicion.

What can be said is that the CR.32 was, by design, a relatively cheap and simple aircraft: a modest V12, a rugged airframe and light armament. That affordability was part of its appeal to smaller air forces and is one reason roughly 1,200 were built and the type was licence-produced in Spain long after Italy had moved on.

The CR.32 evolved through several sub-types. The CR.32bis added two more machine guns in the lower wing and provision for light bombs, at some cost in agility; the CR.32ter and CR.32quater refined the equipment and lightened the aircraft again, the quater becoming the definitive single-seat fighter version. Spain’s licence-built machines, nicknamed “Chirri”, served long after 1939. Performance and armament varied between versions and sources; the figures above describe a representative CR.32.

The defining match-up of the Spanish air war pitted the CR.32 against the Soviet-built Polikarpov I-16 — and it is one of the most instructive fighter duels in history. The Fiat was a biplane: slower in level flight and in the dive, but able to turn inside almost anything. The I-16 was a stubby, fast monoplane that accelerated, dived and zoom-climbed far better than the CR.32 but could not match its turn.

The result depended entirely on who dictated the fight. A CR.32 pilot who could drag the I-16 into a turning battle often won; an I-16 pilot who used speed to make slashing dive-and-zoom attacks, refusing to circle, could fight on his own terms and escape. Neither aircraft was simply “better”. But the trend was unmistakable to anyone willing to see it: the fast monoplane chose the terms of combat, and in the next war that advantage would prove decisive. The CR.32 won many of these fights and still, in a deeper sense, lost the argument.

Few interwar fighters travelled as widely as the CR.32. Hungary and Austria bought it for their expanding air arms; China acquired a small batch that saw combat in the opening phase of the war with Japan; and in South America both Venezuela and Paraguay operated the type. For a smaller air force the appeal was obvious — the CR.32 was cheap, tough, forgiving to fly and combat-proven, exactly the qualities a limited budget rewarded.

Spain took the relationship furthest of all. Having flown the CR.32 to fame in its civil war, Spain built the aircraft under licence as the Hispano-Aviación HA-132 “Chirri”, and these machines served the Spanish air arm for years after 1939. Exact export and licence totals vary between sources, but the breadth of the CR.32’s foreign service is a measure of how good a light biplane fighter it was — and of how reluctant the world was to let the type go.

The CR.32’s place in history is oddly paradoxical. Judged purely as a biplane fighter it is one of the greats — arguably the finest of its kind, and certainly the most successful in combat, with a record over Spain that few rivals can match. Yet it is remembered almost as often as a cautionary tale: proof that an aircraft can win its war so convincingly that it teaches its makers the wrong thing.

Both readings are fair, and together they are why the CR.32 still repays study. It sits exactly on the hinge between two eras of air combat — the last, best expression of the agile biplane, flying into a decade that belonged to the fast monoplane. To understand why Italy took a biplane, the CR.42, to war in 1940 is to understand the CR.32 first. In that sense the little Fiat’s influence outlived its own front-line career by years, and its shadow falls across the whole story of Italian fighter aviation in the Second World War.