During World War II, John Hockery became a U.S. Army Air Forces ACE, credited with shooting down 7 enemy aircraft in aerial combat. He gained his final two victories on November 26, 1944, and was shot down in that action, captured, and held as a prisoner of war. After the war he transferred to the new U.S. Air Force. He flew combat for the second time in Korea, where he was credited with shooting down one enemy MiG for his eighth aerial victory.