Squadron leader a flying squadron is usually commanded by a wing commander, with each of the two flights under a squadron leader. However, ground-operating squadrons which are sub-divisions of a wing are ordinarily commanded by a squadron leader. This includes squadrons of the RAF Regiment and University Air Squadrons. The rank insignia consists of a thin blue band on a slightly wider black band between two narrow blue bands on slightly wider black bands. This is worn on both the lower sleeves of the tunic or on the shoulders of the flying suit or the casual uniform. Squadron leaders are the lowest
Air force officer ranks of air force rank insignia in use, many air forces use army-style rank insignia whilst others follow the Royal Air Force style (shown below). Air force officer ranks Many Air forces of use a rank system similar to Armies, however, the RAF and the air forces of many Commonwealth countries, or those formerly under a British influence, use a different set of ranks loosely based on naval equivalents; Lieutenant, Commander, Captain and Commodore are prefixed for air force use with "Flight", "Wing", "Group" and "Air", respectively (the first three being the units that they used to command). To assist in