Laverton is the third oldest RAAF base, being built in 1925 at the same time as RAAF Base Richmond, which was opened slightly before Laverton. Located approximately from Point Cook, Laverton is the home of Headquarters Air Force Training Group (formerly Training Command). It also contains all the administrative functions of RAAF Williams. Other units at Laverton are the ADF School of Languages, Defence International Training Centre (DITC), Director General Technical Airworthiness, No. 21 (City of Melbourne) Squadron (RAAF Active Reserve) and a number of smaller sub-units. It also hosts an element of 8th/7th Battalion of the Royal Victoria Regiment, Australian Army Reserve, as well as elements of the Defence Materiel Organisation (DMO).