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
Uniforms of the Royal Air Force overtrousers were issued. Although not initially intended it quickly became standard practice for officers and other ranks to attach rank badges to the lapels and wear the nylon jacket in place of the uniform raincoat, as a more practical modern wear. The Royal Air Force ranks and insignia form part of the uniform of the Royal Air Force. Royal Air Force rank insignia were based on combination of those of the Royal Navy officer rank insignia and British Army. For officers (see also RAF officer ranks): For other ranks (see also RAF other ranks): The Royal Air Force has the