The rank is equivalent to Warrant Officer Junior Grade (WOJG) which is today's Warrant Officer (NATO grade: W-1). Enlisted and aviation cadet trainees who successfully passed air qualification training were appointed as Flight Officers and served as rated pilots, navigators, flight engineers, bombardiers and glider pilots. At the end of World War II, the Army Air Forces discontinued the use of the rank of flight officer. All of the service's flight officers had either been promoted to commissioned officer ranks during the course of the war or discharged.