Regimental Sergeant Major - Army (RSM-A) is the most senior warrant officer in the Australian Army. It is a singular appointment – it is only held by one person at any time. RSM-A holds the unique rank of warrant officer (WO), which is senior to the rank of warrant officer class one. The special insignia for the RSM-A is the Australian coat of arms with a wreath around it. The thirteenth and current Regimental Sergeant Major of the Army is Brad Doyle.

Based on the United States Army practice of appointing a Sergeant Major of the Army, the RSM-A is the senior soldier of the Australian Army and principal non-commissioned advisor to the Chief of Army. The RSM-A's primary role is to represent the views, concerns and opinions of the soldiers in the Army to senior leaders. They also carry the Chief of Army's message and intent down and across the ranks.

The appointment is the equivalent of the Warrant Officer of the Navy (WO-N) in the Royal Australian Navy, and the Warrant Officer of the Air Force (WOFF-AF) in the Royal Australian Air Force.

The post was created by the then Chief of Army, Lieutenant General Sir Phillip Bennett.

Appointees

See also Sergeant Major of the Army Army Sergeant Major Sergeant Major of the Army (Denmark) Sergeant Major of the Army (South Africa)

References