During World War II, its predecessor unit, the 27th Bombardment (later Fighter) Group fought in the Pacific Ocean and Mediterranean, Middle East and African theatres. Its ground personnel fought as infantry in the 1941–1942 Battle of Bataan with the survivors being forced to march as prisoners in the Bataan Death March. Its air echelon went on to be awarded five Distinguished Unit Citations and a Philippine Presidential Unit Citation. The Airmen of the 27th were among the most decorated USAAF units of the war.