The de Havilland Mosquito is a British twin-engined fighter-bomber which served as Britain's aerial workhorse during World War II; it was capable of acting as a heavy fighter, night fighter, fast bomber, reconnaissance plane, torpedo bomber, and practically any other role that the RAF could think of. The Mosquito's most widely produced version was the FB Mk. VI, a fighter-bomber variant equipped with twin Rolls-Royce Merlin engines and extremely heavy armament, consisting of four Hispano-Suiza HS.404 and four Browning M1919 in .303 British. Though lightly armoured, its outstanding speed allowed it to evade anti-aircraft fire and Comintern fighters with relative ease.