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
Royal Air Force Volunteer Reserve (Training Branch) Captain, these ranks are held by members of the RAFR or Regular RAF. All Air Cadets Officers hold a maximum substantive rank of Flying Officer, all other Air Cadets ranks above that of Flying Officer are acting (either paid or unpaid) ranks. Royal Air Force Volunteer Reserve (Training Branch) The Royal Air Force Volunteer Reserve (Training Branch), often abbreviated to RAFVR(T), is a Volunteer Reserve element of the Royal Air Force specifically appointed in a training role within the Royal Air Force Volunteer Reserve. Members of the RAFVR(T) have no call-up liability and often operate part-time with the Air Experience