RAAF Base Edinburgh is a Royal Australian Air Force (RAAF) military airbase located in Edinburgh approximately north of Adelaide, South Australia, Australia and forms part of the Edinburgh Defence Precinct. The base is primarily home to No 92 Wing and their Lockheed AP-3C Orion and Boeing P-8 Poseidon maritime patrol aircraft that conduct surveillance operations throughout Australia's region of interest. The base is also the home of the Air Warfare Centre which is responsible through its Air Force Ranges Directorate for the Woomera Test Range. The base has over the past decade become home to elements of the 1st Brigade of the Australian Army. History The construction of RAAF Base Edinburgh commenced in 1953 and it was officially opened 22 March 1954 as a support base for weapons development at the joint UK-Australian Weapons Research Establishment (WRE) at Woomera and Maralinga. The support base had previously been based at a small Edinburgh Airfield and at RAAF Base Mallala. The base was located alongside the wartime Salisbury Explosives Factory, in open fields between the then country villages of Salisbury (to the south) and Smithfield (to the north). At about the same time, the satellite town of Elizabeth was being established (to the east). Support for WRE testing activities had greatly reduced by the late 1960s. In 1968, No. 11 Squadron relocated to Edinburgh operating Orions. In the late 1970s, No. 10 Squadron also operating Orions relocated to Edinburgh and a maritime patrol wing No. 92 Wing was established at Edinburgh making it the primary base for Australia's maritime reconnaissance operations. RAAF Base Edinburgh has since been home to No 1 Recruit Training Unit, the Institute of Aviation Medicine (AVMED) and the Aircraft Research and Development Unit (ARDU). Originally, RAAF Edinburgh and the DSTO were located in Salisbury, (subsequently the suburb of Salisbury – Postcode 5108), in the City of Salisbury. In 1997, the Department of Defence decided to rationalise the then "DSTO Salisbury" site and sell off about 70% of the site, and surrounding "Defence-owned" Crown land, to form the "Edinburgh Parks" industrial estate. The suburb of Salisbury was split in two, with the part containing the RAAF Base and DSTO renamed "Edinburgh" (after the RAAF Base). The new suburb was assigned the Postcode 5111. On 5 December 2003, stage one of the redevelopment of the base was opened including facilities for the newly formed Aerospace Operational Support Group, and for