The first mockup of the F2H was actually completed before the end of WWII. A continuation of the FH-1 Phantom program, the F2H was a progressive step in the Navy’s effort to develop jet aircraft for carrier operation. The Banshee, as it was called, entered service in 1948, served in the Korean War, and wasn’t retired until 1961. It was also operational with the Canadian Navy until 1962.
Development of the F-86 actually started before the end of WWII, initiated by North American Aviation. Using captured data from the design of the ME-262 showed that a swept wing was the only way to fulfill an Army Air Force requirement for a 600 mph speed for the new design. Progressive modifications led to the fighter that effectively countered the threat of the Mig-15 during the Korean War… more