World War II fighter planes included the Grumman F4F WILDCAT and the de Havilland MOSQUITO. The WILDCAT was an American fighter plane used by the US Navy and Marine Corps during the war. It was designed to be a carrier-based aircraft and was used in the Pacific Theater. The MOSQUITO was a British fighter plane used by the Royal Air Force during the war. It was a multi-role aircraft, capable of performing both fighter and bomber roles. Both planes were instrumental in the Allied victory in World War II.