The main Allied countries involved in air battles during World War II were the United States, the Soviet Union and Great Britain. The United States was known for the all-around excellent fighter plane P-51D Mustang and the massive fighter Chance Vought F4U-4 Corsair. The Soviet Union's Yakovlev Yak-3 was renowned for its dogfighting capabilities, and Great Britain's Supermarine MKs 24 Spitfire and Hawker Hurricane were the main planes flown by Royal Air Force pilots in the bruising Battle of Britain.
The Republic P-47D Thunderbolt was also an essential part of the United States' fighter plane arsenal. It was equipped with .50 caliber guns, external bombs and rockets and had the highest kill-to-death ratio of any plane used in WWII. The Lockheed P-38J Lightning, on the other hand, was lightly armed but was extremely fast and well-equipped for dogfighting.
The Soviet Union-designed Polikarpov I-16 was the world's first cantilever-winged monoplane fighter and saw extensive action on the Eastern front in the late 1930s and early 1940s. The Hawker Typhoon was a failed interceptor aircraft that eventually ended up being used by British and French forces as a close support bomber.
The Curtiss Kittyhawk P-40 was also an extremely popular American-made plane that first flew in 1938 and was used by the air forces of 28 countries, including most Allied nations during WWII.