Some 1950 members of the Regular Army and 1900 members of the Army Reserve are resident across the state.
Army’s presence includes the 1st Armoured Regiment and 7th Battalion RAR of the 1st Brigade (Adelaide) based at the Horseshoe Barracks in RAAF Base Edinburgh, the 16th Air Land Regiment of the 6th Brigade based at Woodside and the Reserve 9th Brigade, headquartered at Keswick with bases across the state, as well as important national land-focused research and development activities. The 1st Combat Service Support Team also provides logistic support to the 1st Brigade Army elements in the state.
Part of the Army’s 6th (CS&ISTAR) Brigade, the 16th Air Land Regiment, is the Australian Army's only ground-based air defence unit and is responsible for protecting a wide range of military assets during conflicts with Counter Rocket, Artillery, and Mortar (CRAM) systems and point air defence systems.
South Australia also has some of the nation’s most valuable test and training areas, including the:
- Woomera Range Complex, the world’s largest land-based test range
- Port Wakefield Proof and Experimental Establishment
- Close Training Area at Horseshoe Barracks, Headquarters 1st Brigade, RAAF Base Edinburgh
- Cultana Training Area
- Murray Bridge Training Area