The Royal Australian Navy (RAN) is the naval branch of the Australian Defence Force (ADF). The professional head of the RAN is Chief of Navy (CN) Vice Admiral Mark Hammond. The Chief of Navy is also jointly responsible to the Minister for Defence (MINDEF) and the Chief of the Defence Force (CDF). The Department of Defence, which is a part of the Australian Public Service, administers the ADF, and ergo, the Royal Australian Navy. In 2023, the Surface Fleet Review was introduced to outline the future of the Navy.
Warrant officer (WO) is a rank or category of ranks in the armed forces of many countries. Depending on the country, service, or historical context, warrant officers are sometimes classified as the most junior of the commissioned officer ranks, the most senior of the non-commissioned officer (NCO) ranks, or in a separate category of their own. Warrant officer ranks are especially prominent in the militaries of Commonwealth nations and the United States.
Regimental sergeant major (RSM) is an appointment that may be held by a warrant officer (WO) in the British Army, the Royal Marines, and the armies of many other Commonwealth and former Commonwealth nations. It is also an actual rank in the Irish Defence Forces, and formerly in the British Army, Royal Marines and United States Army. Only one warrant officer holds the appointment of RSM in any regiment or battalion, making them the senior warrant officer; in a unit with more than one top-ranked WO, the RSM is considered to be first amongst equals". The RSM is primarily responsible for assisting their commander in maintaining standards and discipline amongst the non-commissioned members and acts as a parental figure to their subordinates, sometimes referred to by the mantra "Drill, Dress and Discipline".
A non-commissioned officer (NCO) is a military officer who does not hold a commission. Non-commissioned officers usually earn their position of authority by promotion through the enlisted ranks. In contrast, commissioned officers usually enter directly from a military academy, officer training corps (OTC) or reserve officer training corps (ROTC), or officer candidate school (OCS) or officer training school (OTS), after receiving a post-secondary degree.
Sergeant is a rank in use by the armed forces of many countries. It is also a police rank in some police services. The alternative spelling, serjeant, is used in The Rifles and other units that draw their heritage from the British light infantry. Its origin is the Latin serviens, 'one who serves', through the Old French term serjant.
Staff sergeant is a rank of non-commissioned officer used in the armed forces of many countries. It is also a police rank in some police services.
Sergeant major is a senior non-commissioned rank or appointment in many militaries around the world. Sergeants Major serve as the senior enlisted advisor to the commander.
A chief petty officer (CPO) is a senior non-commissioned officer in many navies and coast guards, usually above petty officer.
A petty officer (PO) is a non-commissioned officer in many navies. Often they may be superior to a seaman, and subordinate to more senior non-commissioned officers, such as chief petty officers.
Chief Warrant officer is a senior warrant officer rank, used in many countries.
Officer cadet is a rank held by military cadets during their training to become commissioned officers. In the United Kingdom, the rank is also used by members of University Royal Naval Units, University Officer Training Corps and University Air Squadron; however, these are not trainee officers with many not choosing a career in the armed forces.
Flight sergeant is a senior non-commissioned rank in the Royal Air Force and several other air forces which have adopted all or part of the RAF rank structure. It is equivalent to a staff sergeant or colour sergeant in the British Army, a colour sergeant in the Royal Marines, and a chief petty officer in the Royal Navy, and has a NATO rank code of OR-7. In the RAF, flight sergeant ranks above chief technician and below warrant officer.
Like the British Army, the Australian Army does not use the term 'enlisted' to describe its non-commissioned ranks. Instead, personnel who are not commissioned officers are referred to as other ranks. These are soldiers, non-commissioned officers (NCOs) and warrant officers (WOs). Warrant officers are appointed by a warrant which is signed by the Chief of the Army. The insignia for non-commissioned ranks are identical to the British Army up to the rank of warrant officer class two. Since 1976, WO1s and the WO in the Australian Army wear insignia using the Australian Coat of Arms.
The rank structure of the Royal Australian Air Force (RAAF) has been inherited from the Royal Air Force (RAF). The RAF based its officer ranks on the Royal Navy, and its airmen ranks on the British Army.
The Royal Australian Army Chaplains' Department (RAAChD) is an all-officer corps of the Australian Army that provides ordained clergy to minister to the personnel of the Australian Army. RAAChD chaplains belong to either one of several Christian churches, or to the Jewish faith. As of 2012, there are 67 serving regular chaplains (commonly known as 'padres') in the Australian Army. There are also 83 chaplains in the Australian Army Reserve.
The Catholic Diocese of the Australian Military Services, is a military ordinariate of the Roman Catholic Church immediately subject to the Holy See. It was established in 1969 and maintains its Chancery office in Canberra. It is a Diocese in its own right and not governed under any Diocese or Archdiocese.
A warrant officer (WO) in the British Armed Forces is a member of the highest-ranking group of non-commissioned ranks, holding the King's Warrant, which is signed by the Secretary of State for Defence.
Warrant Officer of the Air Force (WOFF-AF) is the senior Warrant Officer in the Royal Australian Air Force (RAAF). It is a singular appointment, being it is only held by one person at any time. The special insignia for the WOFF-AF is the Australian Coat of Arms encircled by a wreath of Australian native flora. The current Warrant Officer of the Air Force is Ralph Clifton.
Senior Enlisted Advisor to the Chief of Defence Force (SEAC) is the senior warrant officer in the Australian Defence Force (ADF). It is a singular appointment, being it is only held by one person at any time. The current Senior Enlisted Advisor to the Chief of Defence Force is Warrant Officer Ken Robertson.
Royal Australian Navy [7] 
Australian Army [7] 
Royal Australian Air Force [7] 
