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
Group captain the rank until the unification of the Canadian Forces in 1968, when army-type rank titles were adopted. A Canadian group captain then became a colonel. In official French Canadian usage, a group captain's rank title was "colonel d'aviation". In the Argentine Air Force "commodoro" (commodore) is the rank in Argentine Spanish while in the Chilean Air Force, the rank in Chilean Spanish is "colonel de aviacion" or "colonel of aviation". Until 1973 it was used by the Royal Malaysian Air Force (RMAF), today the sleeve insignia is that of a full Colonel. In addition to the equivalents used in most