This picture portrays the Westland Whirlwind, a twin-engine experimental British fighter that flew 1940-1943. The highly secret fighter, although it initially showed promise, was plagued with frequent mechanical problems and as a result, only a limited number were flown operationally. The Whirlwind equipped two Royal Air Force squadrons- Nos 137 & 263. These units both saw considerable action 1941-43, performing ground-attack, bomber escort and fighter patrol missions. The Whirlwind achieved a limited number of air-to-air victories over enemy aircraft.