Royal Australian Air Force it was decided by the Air Board that the RAAF would adopt the rank structure that had been implemented in the RAF the previous year. As a result, the RAAF's rank structure came to be: Aircraftsman, Leading Aircraftsman, Corporal, Sergeant, Flight Sergeant, Warrant Officer, Officer Cadet, Pilot Officer, Flying Officer. Flight Lieutenant, Squadron Leader, Wing Commander, Group Captain, Air Commodore, Air Vice Marshal, Air Marshal, Air Chief Marshal, Marshal of the RAAF. In 1922, the colour of the RAAF winter uniform was determined by Williams on a visit to the Geelong Wool Mill. He asked for one dye dip fewer
Squadron leader RAF used major as the equivalent rank to squadron leader. Royal Naval Air Service lieutenant-commanders and Royal Flying Corps majors on 31 March 1918 became RAF majors on 1 April 1918. On 31 August 1919, the RAF rank of major was superseded by squadron leader which has remained in continuous usage ever since. Promotion to squadron leader is strictly on merit, and requires the individual to be appointed to a Career Commission, which will see them remain in the RAF until retirement or voluntary resignation. Before the Second World War, a squadron leader commanded a squadron of aircraft. Today, however,