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
Captain (Canadian army and air force) Captain (Canadian army and air force) Captain is a rank in the Canadian military. In the Canadian Army, the rank insignia of an army captain is three pips and in the Royal Canadian Air Force, the rank insignia of an air force captain is two wide bars. The rank insignia of a navy captain is four wide bars. All officer bars are of gold thread in the dress uniforms, olive drab in combat uniform. The equivalent rank in the Royal Canadian Navy is lieutenant. Prior to the unification of the Canadian Forces in 1968, the Royal Canadian Air Force used