Group captain the wing commander and group captain command pennants are triangular in shape. The rank of group captain is also used in a number of the air forces in the Commonwealth, including the Bangladesh Air Force, Ghana Air Force, Indian Air Force (IAF), Nigerian Air Force, Pakistan Air Force (PAF), Royal Australian Air Force (RAAF), Royal New Zealand Air Force (RNZAF), Sri Lankan Air Force and the Trinidad and Tobago Air Guard. It is also used in the Egyptian Air Force, Hellenic Air Force, Royal Air Force of Oman and the Royal Thai Air Force. The Royal Canadian Air Force used
Ranks of the Royal Australian Air Force Ranks of the Royal Australian Air Force The rank structure of the Royal Australian Air Force (RAAF) has been inherited from the Royal Air Force (RAF). The RAF based its officer ranks on the Royal Navy, and its airmen ranks on the British Army. Unlike the RAF, RAAF rank abbreviations are always written in uppercase without spaces (e.g. Pilot Officer is written as PLTOFF, not Plt Off). Also, the RAAF does not have the ranks of Senior Aircraftman, Junior Technician, Chief Technician or Master Aircrew. The rank insignia is very similar to that of the RAF, with the exception of