The Royal Australian Air Force (RAAF) is the air force branch of the Australian Defence Force. The RAAF was formed in March 1921. As of year 2011, the RAAF has 14,570 permanent full-time personnel and 2,800 part-time active reserve personnel. There is an executive (Air Force HQs) and two commands: Air Command and Training Command. Air Command is the operational arm of the RAAF, while Training Command manages all training. Air Command is divided into six major Force Element Groups.