In June 1965 a submission to the Air Board requested the establishment of 455 positions to provide for the defence of the eleven major RAAF bases in Australia, as well as overseas bases in Malaysia, Thailand and South Vietnam. In the end, the ADG mustering was re-established in October 1965 with an authorised strength of 220 new positions in addition to the remustering of all Drill Instructors and ADIs. After the outbreak of the Vietnam War, Australia was asked to increase its level of commitment. To meet these new demands, the RAAF deployed a number of aircraft to Phan Rang Airbase, South Vietnam, in 1966. The USAF Security Police unit assigned to the base, asked the RAAF to contribute to the defence of the base.