The Bell P-63 Kingcobra (Model 24) was a United States fighter aircraft developed in World War II from the P-39 Airacobra in an attempt to correct that aircraft's deficiencies. Although the aircraft was not accepted for combat use by the United States Army Air Forces, it was successfully adopted by the Soviet Air Force. wem
The Ilyushin Il-2 Shturmovik was one of the most formidable ground attack aircraft of World War II, and was produced by the Soviet Union in huge numbers; a total of 36,163 according to one source. It is believed to be the biggest production run of any aircraft in history.