Corbett Harry Marks was born to George and Blanche Marks December 4, 1917 in Westmoreland County Pennsylvania. His father worked in a coal mine. Corbett was the eldest of six children.
Documentation of his life in Chester County has not been found but he is listed on government records from Chester County. He enlisted on June 25, 1941 in the Army Air Corps and after training was assigned to the 93rd Bomb Squadron, 19th Bomb Group. The Squadron was activated in 1939 flying the Douglas B-18 Bolo twin engined bombers and the new Boeing B-17 Flying Fortress. Corbett’s squadron deployed to the Philippines at Clark Airfield on Luzon in October 1941.