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 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.
The Air Training Corps (ATC) is a British volunteer youth organisation; aligned to, and fostering the knowledge and learning of military values, primarily focusing on military aviation. Part of the Royal Air Force Air Cadets (RAFAC), the ATC is sponsored by the Royal Air Force (RAF) and the wider Ministry of Defence (MoD). The majority of Air Training Corps staff are volunteers, though some staff are paid for full-time work; including Commandant Air Cadets, who is a Royal Air Force officer as part of a Full Term Reserve Service commitment.
Chief Warrant officer is a senior warrant officer rank, used in many countries.
Other ranks (ORs) in the Royal Marines (RM), the British Army, and the Royal Air Force (RAF), along with the navies, armies, and air forces of many other Commonwealth countries and the Republic of Ireland, are those personnel who are not commissioned officers, but usually include non-commissioned officers (NCOs). In the Royal Navy (RN), these personnel are called "ratings" rather than "other ranks". "Non-commissioned member" (NCM) is the equivalent term in the Canadian Armed Forces, and "enlisted rank" is used in the United States and elsewhere.
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.
The term used in the Royal Air Force (RAF) to refer to all ranks below commissioned officer level is other ranks (ORs). It includes warrant officers (WOs), non-commissioned officers (NCOs) and airmen.
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.
A bandmaster is the leader and conductor of a band, usually a concert band, military band, brass band or a marching band.
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.
A senior enlisted advisor (SEA) in the United States Armed Forces is the most senior enlisted service member in a unit, and acts as an advisor to the commanding officer. Formally, E-9 billets for the senior enlisted advisor are established at service unit, command, major command, force, or fleet levels to the SEAs/CSELs of DoD Agencies and the Senior Enlisted Advisor to the Chairman of the Joint Chiefs of Staff. SEAs are also known as command senior enlisted leaders (CSEL). Always a non-commissioned officer, the SEA is the main link between the commanding officer and the enlisted service members under his or her charge.
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 Gary Wilcox is a retired Royal Air Force (RAF) airman and military aircraft engineering technician. He was the Chief of the Air Staff's Warrant Officer (CASWO) to Air Chief Marshal Sir Stephen Dalton, taking post on 27 July 2009, until his retirement in February 2012; making him the most senior other rank (OR) member of the RAF during that time.
The Army Sergeant Major is the most senior member of the other ranks of the British Army.
This is the structure of the Royal Air Force.
Warrant Officer Jake Alpert, is a senior warrant officer in the Royal Air Force, who served as Warrant Officer of the Royal Air Force from 2019 to 2023. Therefore, he was the most senior non-commissioned officer in the RAF.
Warrant Officer Murugesvaran Subramaniam, is a senior Royal Air Force non-commissioned officer, who currently serves as the Warrant Officer of the Royal Air Force.
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