The Australian Defence Organisation is an Australian Government organisation that consists of the Australian Defence Force (ADF) and the civilian Department of Defence personnel supporting the ADF. The Chief of the Defence Force (CDF) and the Secretary of the Department of Defence (SECDEF) jointly manage the ADO under a diarchy and report directly to the Minister for Defence. The ADO diarchy is a governance structure unique in the Australian Commonwealth public service. The main elements of the Australian Defence Organisation are: Australian Defence Force: Department of Defence: