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.
Military recruit training, commonly known as basic training or boot camp, refers to the initial instruction of new military personnel. It is a physically and psychologically intensive process, which resocializes its subjects for the unique demands of military employment.
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.
An officer candidate school (OCS) is a military school which trains civilians and enlisted personnel in order for them to gain a commission as officers in the armed forces of a country. How OCS is run differs between countries and services. Typically, officer candidates have already attained post-secondary education, and sometimes a bachelor's degree, and undergo a short duration of training which focuses primarily on military skills and leadership. This is in contrast with a military academy which includes academic instruction leading to a bachelor's degree.
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.
A United States military occupation code, or a military occupational specialty code, is a nine-character code used in the United States Army and United States Marine Corps to identify a specific job. In the United States Air Force, a system of Air Force Specialty Codes (AFSC) is used. In the United States Navy, a system of naval ratings and designators are used along with the Navy Enlisted Classification (NEC) system. A system of ratings is also used in the United States Coast Guard.
The School of Infantry (SOI) is the second stage of initial military training for enlisted United States Marines after recruit training. The ITB now called IMC went from a 59 day course to 14 week course. Since the initial training pipeline is divided between coasts, Marines from areas east of the Mississippi River usually graduate from MCRD Parris Island and move on to SOI at SOI East, while those from the western half of the nation attend MCRD San Diego and move on to SOI West at the Camp San Onofre area of Camp Pendleton in California. Female Marines are trained at both SOI East and SOI West. The School of Infantry's training mission ensures "Every Marine is, first and foremost, a Rifleman". At SOI, Marines with the Military Occupational Specialty of infantry are trained at the Infantry Training Battalion (ITB), while all non-infantry Marines are trained in basic infantry and combat skills at the Marine Combat Training Battalion. SOI marks a transition in the professional training of entry-level students from basically trained Marines to combat-ready Marines.
The United States Army's Officer Candidate School (OCS) is an officer candidate school located at Fort Moore, Georgia, that trains, assesses, and evaluates potential commissioned officers of the U.S. Army, U.S. Army Reserve, and Army National Guard. Officer candidates are former enlisted members, warrant officers, inter-service transfers, or civilian college graduates who enlist for the "OCS Option" after they complete Basic Combat Training (BCT). The latter are often referred to as college ops.
United States Marine Corps Scout Sniper is a secondary MOS designator of U.S. Marine Corps infantrymen and reconnaissance Marines that have graduated from a U.S. Marine Corps Scout Sniper School. Scout Snipers must earn the rank of Lance Corporal, be selected by their battalion to join the scout-sniper platoon, and complete an approved scout-sniper course in order to receive this designation.
The United States Marine Corps Officer Candidates School (OCS) is a training regiment designed to screen and evaluate potential Marine Corps Officers. Those who successfully complete the period of instruction are commissioned as Second Lieutenants in the United States Marines. Unlike the other United States military services, the majority of Marine Corps officers complete OCS to earn a commission; the exceptions are midshipmen from the United States Naval Academy, limited duty officers and warrant officers, and inter-service transfers. It is located at Marine Corps Base Quantico.
The United States Navy's Officer Candidate School provides initial training for officers of the line and select operational staff corps communities in the United States Navy. Along with United States Naval Academy (USNA) and Naval Reserve Officer Training Corps (NROTC), OCS is one of three principal sources of newly commissioned naval officers.
In the United States Armed Forces, the ranks of 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 Officer Cadet School is a military training centre that trains commissioned officers for the four branches of the Singapore Armed Forces (SAF): the Army, the Navy, the Air Force, and the Digital and Intelligence Service.
A Marine Corps Officer Selection Officer (OSO) leads a team of Marines and civilian employees in the recruitment of college students and graduates for a Commission as a 2nd Lieutenant in the United States Marine Corps.
The United States Marine Corps MOS 0306, infantry weapons officers, commonly referred to as "the gunner" or "Marine gunner" are non-technical chief warrant officers that are weapons specialists and are knowledgeable in the tactical employment of all the infantry weapons in the Marine Corps arsenal—all weapons organic to Marine infantry units.
Communications School is where selected United States Marine Corps commissioned and warrant officers are sent to learn the art and science of planning and employing communications and performing command and staff duties.
Warrant Officer Basic Course (WOBC) is the technical training program a newly appointed U.S. Army Warrant Officer receives after attending Warrant Officer Candidate School. WOBC is designed to certify warrant officers as technically and tactically competent to serve in a designated military occupation specialty. WOBC is the first major test a newly appointed officer must pass to continue serving in the Army as a warrant officer, as WO1 appointments and award of a Warrant Officer MOS are contingent upon successfully completing WOBC.
A School of Infantry provides training in weapons and infantry tactics to infantrymen of a nation's military forces.
An officer is a person who holds a position of authority as a member of an armed force or uniformed service.
Captain in the U.S. Army (USA), U.S. Marine Corps (USMC), U.S. Air Force (USAF), and U.S. Space Force (USSF) is a company-grade officer rank, with the pay grade of O-3. It ranks above first lieutenant and below major. It is equivalent to the rank of lieutenant in the Navy/Coast Guard officer rank system and is different from the higher Navy/Coast Guard rank of captain. The insignia for the rank consists of two silver bars, with slight stylized differences between the Army/Air Force version and the Marine Corps version.
