Defence Act 1903
The Defence Act 1903 is the principal legislation governing the Australian Defence Force (ADF) and the organisation of defence in Australia. The Act establishes the command and control structures of the ADF, including the roles of the Governor-General (as Commander-in-Chief), the Minister for Defence, the Chief of the Defence Force, and the service chiefs of the Navy, Army, and Air Force. The Act also governs the conditions of service for ADF members, the call-out of the ADF in aid of civil authorities, the use of the ADF for domestic security operations (Operation COVID-19 Assist, Operation Bushfire Assist), and the discipline and censorship provisions applicable to defence personnel. The Act has been amended in response to changing strategic circumstances.
Legal area: Military law governs the organisation, command, and use of the Australian Defence Force.
Year enacted: 1903
Full text: https://www.legislation.gov.au/Details/C1903A00015
Key Provisions
- Part III: Command and administration (CDF, service chiefs, defence structure)
- Section 30: Command of the Defence Force (CDF commands the ADF)
- Part IIIAAA: Call out of the ADF (domestic security operations)
- Part IIIA: Use of ADF in aid of civil authorities (disaster relief, emergency response)
- Part IV: Conditions of service (enlistment, discipline, pay and allowances)
- Part V: Censorship and prohibited publications
- Section 118: Power to make Defence Determinations (conditions of service)
Significance
The Defence Act 1903 is the statutory foundation of Australian military organisation. The Act’s call-out provisions (Part IIIAAA) authorise the deployment of the ADF for domestic security operations, subject to safeguards including a requirement for ministerial authorisation and Parliamentary reporting. The Act has been deployed for domestic security operations including the 2002 Commonwealth Heads of Government Meeting, the 2006 Commonwealth Games, and Operation COVID-19 Assist (2020-2022).