The He Zwilling was a design that entailed the merging of two He The design was originally conceived to tow the Messerschmitt Me 321 glider. Initially four He 111 were modified. This resulted in a twin-fuselage five-engine aircraft.
The German Focke-Wulf Huckebein was a jet-powered fighter aircraft designed as the successor to the Messerschmitt and other day fighters in Luftwaffe service during World War II. Only a few prototypes were developed.
[Photo] German He 111 bomber of Kampfgeschwader 1 taking off, France, summer 1940
Westland Whirlwind l, British twin-engined heavy fighter. It was the Royal Air Force's first single-seat, twin-engined, cannon-armed fighter, and a contemporary of the Supermarine Spitfire and Hawker Hurricane. First flew in 1938