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
Heraldic badges of the Royal Air Force former No. 60 Group (Signals) badge; the only difference being the name of the unit was changed and the indentations where the unit number used to be on the main badge was removed. Approval and design of badges extends to all units associated with the Royal Air Force; Regular, Reserve, Auxiliary and Air Training Corps. Over 800 squadron and unit badges, carved from Welsh slate, are set into the floor of the central church of the Royal Air Force, St Clements Danes, London. The first carved badge was placed in the floor by its carver, Madge Whiteman, in 1958. Whiteman