During its operational history, the 30th served in World War I as a training unit in France, its mission to train fighter pilots to go into combat on the Western Front. The squadron was almost torpedoed on its troop ship crossing the Atlantic Ocean. Stationed at Clark Field in the Philippines on 7 December 1941, it was almost wiped out in the 1941 Battle of the Philippines. Some members of the squadron fought as an infantry unit and were captured by the Japanese, being subjected to the Bataan Death March. The squadron was withdrawn to Australia, being reformed and later attacked Japan as a B-29 Superfortress squadron in 1945. It was awarded nine Presidential Unit Citations in World War II. During the Korean War, the 30th attacked North Korean targets with B-29 Superfortresses.