The title flight officer was a military rank used by the United States Army Air Forces during World War II, and also an air force rank in several Commonwealth countries, where it was used for female officers and was equivalent to the rank of flight lieutenant. The term flight officer is sometimes used today to describe job title positions as aircrew members. Aircrew function A flight officer is a member of the aircrew of an aircraft who is responsible for specific functions. The flight officer may function as the navigator, responsible for planning the journey, advising the pilot while en route, and ensuring that hazards or obstacles are avoided. The flight officer may also be responsible for operating aircraft mission/weapon systems, including mission planning, mission timing, threat reactions, aircraft communications, and hazard avoidance. In the United States Navy and Marine Corps and formerly United States Coast Guard, officer aircrew members responsible for operating airborne weapon and sensor systems are called naval flight officers. The title of flight officer is also used for police officers who serve as pilots in law enforcement aviation units. Military rank United States United States Army Flight officer was a United States Army Air Forces rank used during World War II, from 1942 to 1945; the rank being created on 10 September 1942. On 5 November 1942 military glider pilots were commissioned as flight officers after the completion of their training. The new rank insignia was nicknamed "the blue pickle." 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. By then, all of the service's flight officers had either been promoted to commissioned officer ranks during the course of the war or discharged. In the late 1940s, following the creation of the separate United States Air Force in 1947, the United States Army required more pilots. However, congressionally-imposed commissioned officer strength levels prevented pilot expansion. The Army requested authority to establish the flight officer/warrant officer program. This proposal was rejected because the Army already had three groups of personnel – enlisted, warrant officer, and commissioned officer. As a fallback