4th Military District (Australia)

34°56′46″S 138°34′55″E / 34.94609°S 138.58189°E / -34.94609; 138.58189

The 4th Military District was an administrative district of the Australian Army. During the Second World War, the 4th Military District covered all of South Australia, with its headquarters at Adelaide. Around the start of the Second World War, the 4th Military District became part of Southern Command, along with the 3rd and 6th Military Districts in Victoria and Tasmania. This required legislative changes to the Defence Act (1903), and did not come into effect until October 1939.^[1][2]

• 4th Military District Headquarters – Adelaide

• Headquarters – Keswick
• 3rd Light Horse Regiment (The South Australian Mounted Rifles) – Mt. Gambier
• 9th/23rd Light Horse Regiment (Flinders Light Horse/Barossa Light Horse) – Clare
• 18th Light Horse (Machine Gun) Regiment (The Adelaide Lancers) – Unley

• Headquarters – Keswick
• 10th Battalion (The Adelaide Rifles) – Adelaide^[3]
• 27th Battalion (The South Australian Scottish Regiment) – Keswick
• 43rd Battalion (The Hindmarsh Regiment) – Adelaide
• 48th Battalion (The Torrens Regiment) – Adelaide

• Headquarters – Adelaide
• 49th Field Battery – Adelaide
• 50th Field Battery – Prospect
• 113th (Heavy) Field Battery – Kilkenny
• 48th Field Battery (Attached) – Keswick

• 10th Heavy Battery, RAA (PF) – Fort Largs
• 110th Heavy Battery, RAA (M) – Fort Largs
• Detachment, RAE (PF) – Keswick
• 20th Heavy Battery, RAA (PF) – Fort Largs
• 120th Heavy Battery, RAA (M) – Fort Largs
• 3rd Troop, 2nd Field Squadron, RAE – Keswick
• 3rd Field Company, RAE – Keswick

• Dennis, Peter; Grey, Jeffrey; Morris, Ewan; Prior, Robin; Bou, Jean (2008). The Oxford Companion to Australian Military History (Second ed.). Melbourne: Oxford University Press. ISBN 9780195517842.
• Kuring, Ian (2004). Redcoats to Cams: A History of Australian Infantry 1788–2001. Loftus, New South Wales: Australian Military History Publications. ISBN 1-876439-99-8.
• Long, Gavin (1952). To Benghazi. Australia in the War of 1939–1945. Series 1 – Army. Vol. 1. Canberra: Australian War Memorial. OCLC 18400892.