The F4F Wildcat was the US Navy's primary carrier borne fighter aircraft at the start of the Second World War Characterised by its stubby appearance the Wildcat had been developed from Gruman's successful range of pre-war biplanes & had entered service with the US Navy a year prior to the Japanese attack on Pearl Harbor By the time of the crucial battles from Midway & Guadalcanal the F4F-4 model had become the most numerous varient & new tactics enabled American naval & marine pilots to gain the upper hand on the previously all-conquering Mitsubishi Zero