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 Thai Air Force of the Royal Thai Air Force's Special Combat Operations Squadron, was formed in the late 1970s and are based near Don Muang Airport and provide anti-hijacking capabilities. They have three assault platoons, each divided into two sections. The Royal Thai Air Force Combat Group is divided into 11 wings plus a training school, plus a few direct-reporting units. First set up in 1913 in the same year as the Air Force, providing nursing services only, and over the years has gradually expanded. It operates Bhumibol Adulyadej Hospital and Royal Thai Air Force Hospital in Bangkok, as well as smaller hospitals