Chiefs of the Defence Force (Australia)

Prior to 1958 there was no CDF or equivalent; a Chiefs of Staff Committee (COSC) existed but no separate position was established as its senior officer. Instead, the senior service chief served as Chairman of the Chiefs of Staff Committee.

In March 1958, Lieutenant General Sir Henry Wells was appointed Chairman, Chiefs of Staff Committee, a role independent of and notionally senior to the Army, Navy and Air Force chiefs. However Wells and his successors did not command the Australian armed forces in any legal sense; the Chairman had only an advisory role in the running of the separate services.

In February 1976, COSC was dissolved and the new position of Chief of Defence Force Staff (CDFS) was created with command authority over the ADF. In October 1984 the position was renamed Chief of the Defence Force to more clearly reflect the role and its authority.