In the

United States Army The United States Army (USA) is the land warfare, land military branch, service branch of the United States Armed Forces. It is one of the eight Uniformed services of the United States, U.S. uniformed services, and is designated as the Army o ...

U.S. Marine Corps The United States Marine Corps (USMC), also referred to as the United States Marines, is the maritime land force service branch of the United States Armed Forces responsible for conducting expeditionary and amphibious operations through com ...

U.S. Air Force The United States Air Force (USAF) is the air service branch of the United States Armed Forces, and is one of the eight uniformed services of the United States. Originally created on 1 August 1907, as a part of the United States Army Sign ...

and

U.S. Space Force The United States Space Force (USSF) is the space service branch of the U.S. Armed Forces, one of the eight U.S. uniformed services, and the world's only independent space force. Along with its sister branch, the U.S. Air Force, the Space ...

, major is a field-grade

military A military, also known collectively as armed forces, is a heavily armed, highly organized force primarily intended for warfare. It is typically authorized and maintained by a sovereign state, with its members identifiable by their distin ...

officer An officer is a person who has a position of authority in a hierarchical organization. The term derives from Old French ''oficier'' "officer, official" (early 14c., Modern French ''officier''), from Medieval Latin ''officiarius'' "an officer," ...

rank Rank is the relative position, value, worth, complexity, power, importance, authority, level, etc. of a person or object within a ranking, such as: Level or position in a hierarchical organization * Academic rank * Diplomatic rank * Hierarchy * H ...

above the rank of

captain Captain is a title, an appellative for the commanding officer of a military unit; the supreme leader of a navy ship, merchant ship, aeroplane, spacecraft, or other vessel; or the commander of a port, fire or police department, election precinct, e ...

and below the rank of lieutenant colonel. It is equivalent to the naval rank of

lieutenant commander Lieutenant commander (also hyphenated lieutenant-commander and abbreviated Lt Cdr, LtCdr. or LCDR) is a commissioned officer rank in many navies. The rank is superior to a lieutenant and subordinate to a commander. The corresponding rank i ...

in the other

uniformed services Uniformed services is an abstract term that are generally bodies of people in employment of a state who wear a distinct uniform that differentiates them from the public and private sector. Their purpose is to maintain the peace, security, safety, ...

. Although lieutenant commanders are considered junior officers by their respective services (Navy and Coast Guard), the rank of major is that of a senior officer in the United States Army, the United States Marine Corps, and the United States Air Force. The

pay grade A pay grade is a unit in systems of monetary compensation for employment. It is commonly used in public service, both civil and military, but also for companies of the private sector. Pay grades facilitate the employment process by providing a fi ...

for the rank of major is O-4. The insignia for the rank consists of a golden

oak An oak is a tree or shrub in the genus ''Quercus'' (; Latin "oak tree") of the beech family, Fagaceae. There are approximately 500 extant species of oaks. The common name "oak" also appears in the names of species in related genera, notably ''L ...

leaf, with slight stylized differences between the Army/Air Force version and the Marine Corps version. Promotion to major is governed by the Department of Defense policies derived from the

Defense Officer Personnel Management Act The Defense Officer Personnel Management Act (DOPMA) () is a United States federal law passed in 1980 that for the first time standardized officer personnel management across the United States Armed Forces. It established ceilings on the number of ...

of 1980.

Army

A major in the U.S. Army typically serves as a

battalion A battalion is a military unit, typically consisting of 300 to 1,200 soldiers commanded by a lieutenant colonel, and subdivided into a number of companies (usually each commanded by a major or a captain). In some countries, battalions are ...

executive officer An executive officer is a person who is principally responsible for leading all or part of an organization, although the exact nature of the role varies depending on the organization. In many militaries and police forces, an executive officer, ...

(XO) or as the battalion

operations officer Military operations is a concept and application of military science that involves planning the operations for the projected maneuvering forces' provisions, services, training, and administrative functions—to allow them to commence, insert, t ...

(S3). Majors can also serve as Company Commanding Officers, a major can also serve as a primary staff officer for a

regiment A regiment is a military unit. Its role and size varies markedly, depending on the country, service and/or a specialisation. In Medieval Europe, the term "regiment" denoted any large body of front-line soldiers, recruited or conscripted ...

brigade A brigade is a major tactical military formation that typically comprises three to six battalions plus supporting elements. It is roughly equivalent to an enlarged or reinforced regiment. Two or more brigades may constitute a division. ...

or task force in the areas concerning personnel, logistics, intelligence, and operations. A major will also be a staff officer / action officer on higher staffs and headquarters. In addition, majors command augmented companies in Combat Service and Service Support units. U.S. Army majors also command

Special operations Special operations (S.O.) are military activities conducted, according to NATO, by "specially designated, organized, selected, trained, and equipped forces using unconventional techniques and modes of employment". Special operations may include ...

companies, such as

U.S. Army Special Forces The United States Army Special Forces (SF), colloquially known as the "Green Berets" due to their distinctive service headgear, are a special operations force of the United States Army. The Green Berets are geared towards nine doctrinal mis ...

companies, Civil Affairs companies, Military Information Support Operations companies, and certain types of separate, numbered vice lettered,

Military Intelligence Military intelligence is a military discipline that uses information collection and analysis approaches to provide guidance and direction to assist commanders in their decisions. This aim is achieved by providing an assessment of data from ...

companies. Selected majors in the United States Army attend the 10-month

Command and General Staff School The United States Army Command and General Staff College (CGSC or, obsolete, USACGSC) at Fort Leavenworth, Kansas, is a graduate school for United States Army and sister service officers, interagency representatives, and international military ...

Fort Leavenworth Fort Leavenworth () is a United States Army installation located in Leavenworth County, Kansas, in the city of Leavenworth. Built in 1827, it is the second oldest active United States Army post west of Washington, D.C., and the oldest perman ...

, with a greater number attending satellite schools administered by Fort Leavenworth at

Fort Belvoir Fort Belvoir is a United States Army installation and a census-designated place (CDP) in Fairfax County, Virginia, United States. It was developed on the site of the former Belvoir plantation, seat of the prominent Fairfax family for whom Fa ...

, Fort Lee,

Virginia Virginia, officially the Commonwealth of Virginia, is a state in the Mid-Atlantic and Southeastern regions of the United States, between the East Coast of the United States, Atlantic Coast and the Appalachian Mountains. The geography an ...

Redstone Arsenal Redstone Arsenal (RSA) is a United States Army post and a census-designated place (CDP) adjacent to Huntsville in Madison County, Alabama, United States and is part of the Huntsville-Decatur Combined Statistical Area. The Arsenal is a garriso ...

, and

Fort Gordon Fort Gordon, formerly known as Camp Gordon, is a United States Army installation established in October 1941. It is the current home of the United States Army Signal Corps, United States Army Cyber Command, and the Cyber Center of Excellence. ...

. 960 graduated from the Leavenworth course in 2009 (the largest class in Army history).

American Revolution

The Continental Army mostly followed the organization and rank structure of the British Army. A regiment consisted of 8 companies with three officers (a captain, a lieutenant and ensign) and about 60 enlisted men each. The field grade officers of a regiment were the colonel, the lieutenant colonel and a major. The major was the regiment's third in command and, at least in theory, would command one of the regiment's two battalions if the regiment were divided for tactical purposes.

American Civil War

During the American Civil War the

Union Army During the American Civil War, the Union Army, also known as the Federal Army and the Northern Army, referring to the United States Army, was the land force that fought to preserve the Union of the collective states. It proved essential to th ...

continued to use the existing titles of rank and rank insignia established for the US Army. After the Southern states seceded and became the

Confederate States of America The Confederate States of America (CSA), commonly referred to as the Confederate States or the Confederacy was an unrecognized breakaway republic in the Southern United States that existed from February 8, 1861, to May 9, 1865. The Confede ...

, the

Confederate Army The Confederate States Army, also called the Confederate Army or the Southern Army, was the military land force of the Confederate States of America (commonly referred to as the Confederacy) during the American Civil War (1861–1865), fighti ...

retained the same titles of rank as its Union counterpart, but developed a new system of rank identification and insignia for its officers. While Union officers continued to wear their rank insignia on their shoulder straps, Confederate officers wore their rank insignia on the collar (one, two, or three horizontal gold bars for lieutenants and captains; one, two, or three gold stars for field grade officers; and three gold stars surrounded by a wreath for all general officers), as well as rows of gold lace forming an

Austrian knot An Austrian knot (or Hungarian knot), alternatively warrior's knot or , is an elaborate design of twisted cord or lace worn as part of a dress uniform, usually on the lower sleeve. It is usually a distinction worn by officers; the major excep ...

pattern on each sleeve. The number of rows of gold lace increased with the rank of the officer.

Post-Civil War

In the late 1800s the US Army changed from the traditional 10 company regiment to one of 12 companies organized into three four-company battalions, each commanded by a major. Prior to World War II, battalion commanders became lieutenant colonels. The basic regimental organization remained standard until after the Korean War when regiments with organic battalions were no longer used as tactical units. Battalions attached to brigades replaced the regiment. Battalions commanded by lieutenant colonels became the US Army's basic tactical unit. As a result, there were only a limited number of command positions for majors although Medical,

Special Forces Special forces and special operations forces (SOF) are military units trained to conduct special operations. NATO has defined special operations as "military activities conducted by specially designated, organized, selected, trained and equip ...

and Aviation companies are usually commanded by majors.

Marine Corps

Air Force

A major in the Air Force typically has duties as a senior staff officer at the squadron and wing level. In flying squadrons majors are generally flight commanders or assistant directors of operations. In the mission support and maintenance groups majors may occasionally be squadron commanders. In the medical corps, a major may be the head of a clinic or flight.

Space Force

A major in the Space Force typically has duties as a senior staff officer at the squadron and

delta Delta commonly refers to: * Delta (letter) (Δ or δ), a letter of the Greek alphabet * River delta, at a river mouth * D (NATO phonetic alphabet: "Delta") * Delta Air Lines, US * Delta variant of SARS-CoV-2 that causes COVID-19 Delta may also r ...

levels.

Insignia

File:US Army O4 (Army greens).svg,

U.S. Army The United States Army (USA) is the land service branch of the United States Armed Forces. It is one of the eight U.S. uniformed services, and is designated as the Army of the United States in the U.S. Constitution.Article II, section 2, cl ...

rank insignia of a major. File:US Marine O4 shoulderboard vertical.svg,

rank insignia of a major. File:US Air Force O4 shoulderboard.svg,

rank insignia of a major. File:US Space-force O4 (interim).svg,

rank insignia of a major.

References

External links

Confederate Army rank insignia: A guide

Rank history
{{US officer ranks Military ranks of the United States Army Military ranks of the United States Marine Corps Officer ranks of the United States Air Force Officer ranks of the United States Space Force