The 1st Strategic Aerospace Division (1st SAD) is an inactive United States Air Force organization. Its last assignment was with Strategic Air Command, assigned to Fifteenth Air Force, being stationed at Vandenberg Air Force Base, California. It was inactivated on 1 September 1991. The division directed and supervised heavy bombardment (1943–1945) and fighter (1944–1945) operations during World War II in the European Theater.