McClellan Air Force Base has been a part of California's military and aviation history since the mid-1930s. Originally named Pacific Air Depot in 1935, the base's name was changed to the Sacramento Air Depot in 1938, and it became a repair facility for such fighter planes as the P-38 and P-39. During World War II, the base saw significant use in outfitting and supplying munitions for various fighters, including the B-17. Many armed-services personnel departed from McClellan for the Pacific theater, including in part Jimmy Doolittle's famed detail of B-25s, which attacked Tokyo in 1942. After the war, the base stored many types of aircraft, including the B-29 bomber series, and in 1948, changed its name to McClellan Air Force Base, continuing its mission of overhauling and retrofitting planes throughout the cold war.