Amid considerable public controversy, the Australian Labor Party combined with the Government of Prime Minister John Howard to pass military call-out legislation through both houses of the Commonwealth Parliament on 7 September 2000. Less than three months after it was first announced and introduced in the House of Representatives on 28 June, the Defence Legislation Amendment (Aid to Civilian Authorities) Act 2000 (Cth) came into force on 12 September, when it received royal assent by the Governor-General.
Under the amended Defence Act 1903 (Cth) (the Act), the Federal Government now has the power to call out the armed forces on domestic soil against perceived threats to ‘Commonwealth interests', with or without the agreement of a state government. Once deployed, military officers can order troops to open fire on civilians, as long as they determine that it is reasonably necessary to prevent death or serious injury. Soldiers will have greater powers than the police in some circumstances, including the right to shoot to kill someone escaping detention, search premises without warrants, detain people without formally arresting them, seal off areas and issue general orders to civilians.