Wildcat was the main shipboard fighter when the US entered WWII. The F4F was barrel-shaped, with angular wingtips and rudder and a narrow-track undercarriage. The F4F was well-armed and reliable, and was a natural shipboard aircraft, probably more easier to land on a carrier deck than on land.
Developed from Autumn 1942, the 32 Zero fighter followed the Model 21 in being used in the conflict in the Pacific. It featured a Sakae 21 engine fitted with 2 superchargers, and its calling card was a main wing shortened by 50cm on either side and given a squared-off finish.