The 557th Flying Training Squadron is part of the 306th Flying Training Group based at United States Air Force Academy, Colorado, where it has conducted flight training for Academy cadets since 1974. The first predecessor of the squadron was the 557th Bombardment Squadron, a Martin B-26 Marauder unit, which flew combat in the European Theater of Operations, earning a Distinguished Unit Citation in December 1944. It was inactivated after the end of World War II.