HISPANO: BUCHÓN DEVELOPMENT: How Spain came to fit a German fighter with a British engine

A pair of Battle of Britain film Buchóns, ‘Yellow 9’ and ‘Yellow 11’, at altitude in the summer of 1968. Picture: ALAMY

The Buchón largely owes its existence to Germany’s involvement in the Spanish Civil War, supporting Franco’s Nationalist forces from July 1936. The Legion Condor comprised Wehrmacht troops, armoured vehicles and a fleet of Luftwaffe aircraft including early variants of the Junkers Jumo-powered Messerschmitt Bf 109. The German machine was quickly found far superior to the Soviet Polikarpov I-15 and I-16 fighters operated by the Republicans.