Squadron leader Squadron leader Squadron leader (Sqn Ldr in the RAF ; SQNLDR in the RAAF and RNZAF; formerly sometimes S/L in all services) is a commissioned rank in the Royal Air Force and the air forces of many countries which have historical British influence. It is also sometimes used as the English translation of an equivalent rank in countries which have a non-English air force-specific rank structure. An air force squadron leader ranks above flight lieutenant and immediately below wing commander and it is the most junior of the senior officer ranks. The air force rank of squadron leader has a
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