Commander Air Force's mid-rank officers' ranks are modelled on those of the Royal Navy, the term wing commander is used as a rank, and this is the equivalent of a lieutenant colonel in the army or a commander in the navy. The rank of wing commander is above that of squadron leader and below that of group captain. In the former Royal Naval Air Service, which was merged with the Royal Flying Corps to form the Royal Air Force in 1918, the pilots held appointments as well as their normal ranks in the Royal Navy, and they wore insignia appropriate to
History of the Royal Canadian Air Force Royal Air Force, with the exceptions, in the enlisted ranks, of the RCAF having the ranks of Warrant Officer 1 and 2, not having the ranks of Senior Aircraftman or Junior Technician, and not distinguishing between aircrew and non-aircrew for Sergeants and above. The rank structure is almost identical to that of the Royal Australian Air Force, once again with the exception of Warrant Officer 2. RCAF Women's Division personnel used a different rank structure. When the age limit for British Commonwealth Air Training Plan aircrew recruits was lowered to seventeen in 1941, the recruits were placed into the temporary