The Army Museum of South Australia covers the military units raised in the state, with uniforms, equipment, photographs, and unit histories. It is a specialist museum, but useful if you want a local angle on Australia's military story rather than the national version told in Canberra.
Because it sits on an army base, check opening arrangements before you go. For most visitors it is a niche stop, but military-history travellers will find more substance here than the modest size suggests.