“Squadron Leader J A F MacLachlan, the one-armed Commanding Officer of No 1 Squadron RAF, standing beside his all-black Hawker Hurricane Mark IIC night fighter, ‘JX-Q’, at Tangmere, Sussex. MacLachlan flew bombers in France in 1940, but transferred to fighters in June 1940 and shot down 6 enemy aircraft during the Battle of Britain.
He joined No. 261 Squadron RAF in Malta, as a flight commander, and was shot down in February 1941, as a result of which his left arm was amputated. He quickly returned to operations after being fitted with an artificial limb, flying with No. 73 Squadron in North Africa, but in July 1941 returned to the United Kingdom to take command of No. 1 Squadron.
The Hurricane is sporting his personal emblem showing his amputated arm waving a ‘V’ sign. He was again shot down in 1943 and became a prisoner-of-war, by which time his score had risen to 16.5 victories [Critically injured, he died on 31 July 1943].” (via)