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.
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 (Sgt) 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.
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.
The master chief petty officer of the Navy is a unique non-commissioned rank and position of office of the United States Navy, which is designated as a special paygrade above E-9. The holder of this position is the most senior enlisted member of the U.S. Navy, equivalent to the sergeant major of the Army, chief master sergeant of the Air Force, sergeant major of the Marine Corps, master chief petty officer of the Coast Guard, and chief master sergeant of the Space Force. The holder of this rank and position is the most senior enlisted sailor in the Navy, unless an enlisted sailor is serving as the senior enlisted advisor to the chairman. The current MCPON is James Honea.
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.
A Petty officer third class is a non-commissioned officer in some navies and coast guards.
Petty officer second class (PO2) is a rank found in some navies and maritime organizations.
Petty officer first class (PO1) is a rank found in some navies and maritime organizations.
The sergeant major of the Army (SMA) is a unique noncommissioned rank and position of office in the United States Army. The holder of this rank and position is the most senior enlisted soldier in the Army, unless an enlisted soldier is serving as the senior enlisted advisor to the chairman. The SMA is appointed to serve as a spokesman to address the issues of enlisted soldiers to all officers, from warrant officers and lieutenants to the Army's highest positions. As such, they are the senior enlisted advisor to the chief of staff of the Army. The exact duties vary depending on the chief of staff, though much of the SMA's time is spent traveling throughout the Army, observing training and talking with soldiers and their families.
A drill instructor is a non-commissioned officer in the armed forces, fire department, or police forces with specific duties that vary by country. Foot drill, military step, and marching are typically taught by drill instructors.
Chief Warrant officer is a senior warrant officer rank, used in many countries.
The Meritorious Service Medal (MSM) is a military award presented to members of the United States Armed Forces who distinguish themselves with outstanding meritorious achievement or service to the United States.
An Enlisted Performance Report (EPR) is an evaluation form used by the United States Air Force. Instructions for constructing an EPR appear in chapter 3 of Air Force Instruction 36-2406: Officer and Enlisted Evaluation Systems. The EPR replaced the Airman Performance Report (APR) in the late 1980s. The EPR was replaced by the Enlisted Performance Brief (EPB) in 2023.
In the United States Armed Forces, the ranks of warrant officer and chief warrant officer are rated as officers above all non-commissioned officers, candidates, cadets, and midshipmen, but subordinate to the lowest officer grade of O‑1. This application differs from the Commonwealth of Nations and other militaries, where warrant officers are the most senior of the other ranks, equivalent to the U.S. Armed Forces grades of E‑8 and E‑9.
The senior enlisted advisor to the chairman of the Joint Chiefs of Staff (SEAC) is the most senior non-commissioned officer (NCO) position overall in the United States Armed Forces. The SEAC is appointed by the chairman of the Joint Chiefs of Staff to serve as a spokesperson to address the issues of enlisted personnel to the highest positions in the Department of Defense. As such, the SEAC is the primary enlisted advisor to the chairman, and serves at the pleasure of the secretary of defense. The SEAC's exact duties vary, depending on the chairman, though the SEAC generally devotes much of their time traveling throughout the Department of Defense, to observe training and communicating to service members and their families. The SEAC's normal term of assignment runs concurrently with the chairman, but an incumbent may be reappointed to serve longer. The first member to hold this post was William Gainey. The current SEAC is Troy E. Black, USMC who assumed the duties on 3 November 2023.
An officer is a person who holds a position of authority as a member of an armed force or uniformed service.
