The Australian Defence Force's (ADF) ranks of officers and enlisted personnel in each of its three service branches of the Royal Australian Navy (RAN), the Australian Army, and the Royal Australian Air Force (RAAF) inherited their rank structures from their British counterparts. The insignia used to identify these ranks are also generally similar to those used in the British Armed Forces.
The following tables show the "equivalent rank and classifications" for the three services, as defined in the ADF Pay and Conditions Manual. "Equivalent rank" means the corresponding rank set out under Regulation 8 of the Defence Force Regulations 1952.
Warrant officer ranks
Note that the most senior warrant officer in each of the three services is appointed either Warrant Officer of the Navy (WO-N), Regimental Sergeant Major of the Army (RSM-A), or Warrant Officer of the Air Force (WOFF-AF), as appropriate. These are appointments, not ranks; these three people hold the rank of Warrant Officer in their respective services. However, they each wear special insignia, different from the rank insignia worn by other warrant officers. Although the RAN and the RAAF have the one warrant officer rank, the army has three. The soldier appointed Regimental Sergeant Major of the Army (RSM-A) holds the unique Army rank of warrant officer (introduced in 1991 and senior to WO1). The Army rank of WO2 is the same pay grade as the RAN and the RAAF's most senior NCOs, (i.e. chief petty officer and flight sergeant).References
Australian Defence Force ranks Wikipedia(Text) CC BY-SA