The appointment is made by the Governor General on the advice of his/her ministers under Section 9AA of the Defence Act (1903) and is for a fixed term of four years, nominally rotated between the three services, Navy, Army and Air Force; however in practice this has not been the case and the appointment has been held for longer or shorter periods of time. The role is politically neutral, as are all military positions, and is not affected by a change of government.
