Air Marshal Sir Richard Williams,, is widely regarded as the "father" of the Royal Australian Air Force (RAAF). He was the first military pilot trained in Australia, and went on to command Australian and British fighter units in World War I. A proponent for air power independent of other branches of the armed services, Williams played a leading role in the establishment of the RAAF and became its first Chief of the Air Staff (CAS) in 1922. He served as CAS for thirteen years over three terms, longer than any other officer.

The Royal Australian Air Force (RAAF) is the principal aerial warfare force of Australia, a part of the Australian Defence Force (ADF) along with the Royal Australian Navy and the Australian Army. Constitutionally the Governor-General of Australia is the de jure Commander-in-Chief of the Australian Defence Force. The Royal Australian Air Force is commanded by the Chief of Air Force (CAF), who is subordinate to the Chief of the Defence Force (CDF). The CAF is also directly responsible to the Minister for Defence, with the Department of Defence administering the ADF and the Air Force.