When the P-38 entered service in late summer 1941, its twin-engined, twin-boom design and tricycle landing gear were considered somewhat radical. The Lightning combined long range performance with heavy armament. Just over 10,000 were built.

Unofficially known as the "Jug," the P-47 entered service in late 1942. Unable to match the agility and climb rate of its German opposition, it nonetheless excelled in the dive and possessed good high altitude performance and the ability to absorb damage. Over 15,000 of this type were produced.

Considered by many to be the best all-around fighter to emerge from WWII, the P-51 was actually built in response to a British requirement. Ultimately equipped with the British Rolls-Royce Merlin engine, the Mustang proved to be the ideal long-range fighter escort. Nearly 15,000 examples were built and the P-51D model went on to see service in Korea.

The backbone of Germany's air power during the early war years, the Bf109 first entered service in early 1937. The Bf109 was characterized by good performance on the level and vertical planes. It remained in production until 1942 and over 30,000 are estimated to have been produced.

For the title of best fighter to emerge from WWII. Designed by Kurt Tank, the FW190 was a good dogfighter and gun platform, outperforming the contemporary Spitfire in all measures except turning circle. Total production was approximately 20,000.

The BF110 entered service in 1936. It was designed as twin-engined fighter. It did not fare well in this roll. During the Battle of Britain 200 110's were lost during the period Aug - Sept 1940. Defeat by day led to a new career as a night fighter. Close to 6,000 of all marks produced.