Since 4 July 2014, the CDF is appointed for a fixed four-year term under the "Defence Act" (1903). Prior to this date, the appointment was for three years. The position of CDF is notionally rotated between the Royal Australian Navy, the Australian Army and the Royal Australian Air Force. However, in practice this has not been the case; of eighteen appointees, nine have been from the Army, five from the Navy and four from the Air Force. The current Chief of the Defence Force is General Angus Campbell.