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
Bangladesh Air Force directorates headed by directors of group captain/air commodore rank. Under each director there are deputy directors (DD) headed by wing commanders and staff officers (SO) with rank of squadron leader and below. Trades of Bangladesh Air Force are: Branches of Bangladesh Air Force are: BAF Headquarters is located in Dhaka Cantonment. There are numerous bases set up all over the country. BAF Base Khademul Bashar Dhaka, BAF Base Bangabandhu Dhaka, BAF Base Zahurul Haque Chattogram and BAF Base Matiur Rahman Jashore are named after National as well as Air Force heroes. Other major bases are BAF Base Pahar Kanchanpur Tangail