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
Structure of the Royal Air Force in 1989 are listed under the airfields where they were based. The Royal Auxiliary Air Force (RAuxAF) was commanded by an Air Vice-Marshal and provided reinforcements to the Royal Air Force, which were manned by civilians and called upon in times of need or war. Although all RAuxAF units had been disbanded in 1957 it lived on in three Maritime Headquarter Units, which provided ground and air crews for the Nimrod MR.2s of No. 18 (Maritime) Group. In 1979 the RAuxAF returned to life with the formation of three Field Squadrons to provide ground airfield defence at Royal Air Force airfields. During