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 ...
,
Marine Corps
Marines, or naval infantry, are typically a military force trained to operate in in support of naval operations. Historically, tasks undertaken by marines have included helping maintain discipline and order aboard the ship (reflecting the natu ...
, and
, 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
War is an intense armed conflict between State (polity), states, governments, Society, societies, or pa ...

officer
An officer is a person who has a position of authority
In the fields of sociology
Sociology is the study of society, human social behaviour, patterns of social relationships, social interaction, and culture that surrounds everyday life. It ...
rank
Rank is the relative position, value, worth, complexity, power, importance, authority, level, etc. of a person or object within a ranking
A ranking is a relationship between a set of items such that, for any two items, the first is either "ranked ...
above the rank of
captain
Captain is a title for the commander of a military unit, the commander of a ship, aeroplane, spacecraft, or other vessel, or the commander of a port, fire department or police department, election precinct, etc. The captain is a military rank in ar ...
and below the rank of
lieutenant colonel
Lieutenant colonel ( or ) is a rank of commissioned officer in the army, armies, most Marine (armed services), marine forces and some air forces of the world, above a major and below a colonel. Several police forces in the United States use the ...
. It is equivalent to the
naval
A navy, naval force, or maritime force is the branch of a nation's armed forces
A military, also known collectively as armed forces, is a heavily armed, highly organized force primarily intended for warfare. It is typically authorized a ...

rank of
lieutenant commander
Lieutenant commander (also hyphenated lieutenant-commander and abbreviated Lt Cdr, LtCdr. or LCDR) is a commissioned officer
An officer is a person who holds a position of authority as a member of an armed force
A military, als ...
in the other
uniformed services
Uniformed services are bodies of people in employment of a state
State may refer to:
Arts, entertainment, and media Literature
* ''State Magazine'', a monthly magazine published by the U.S. Department of State
* The State (newspaper), ''The Sta ...
. 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
A military, also known collectively as armed forces, is a heavily armed, highly organized force primari ...
for the rank of major is O-4. The insignia for the rank consists of a golden
oak
An oak is a tree
In botany, a tree is a perennial plant with an elongated Plant stem, stem, or trunk (botany), trunk, supporting branches and leaves in most species. In some usages, the definition of a tree may be narrower, including on ...

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
The law of the United States comprises many levels of codified and uncodified forms of law, of which the most important is the nation's Constitution of the Un ...
of 1980.
Army
A major in the U.S. Army typically serves as a
battalion
A battalion is a military unit
Military organization or military organisation is the structuring of the armed force
A military, also known collectively as armed forces, is a heavily armed, highly organized force primarily intend ...

executive officer (XO) or as the battalion
operations officer
Military operations is a concept and application of military science
Military science is the study of military processes, institutions, and behavior, along with the study of warfare, and the theory and application of organized coercive force. ...
(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
Military organization or military organisation is the structuring of the armed forces of a state so as to offer such military capability as a national defense policy may require. In some countries param ...
,
brigade
A brigade is a major tactical military formation
Military organization or military organisation is the structuring of the armed forces of a State (polity), state so as to offer such military capability as a military policy, national de ...

or
task force
A task force (TF) is a unit or formation established to work on a single defined task or activity. Originally introduced by the United States Navy
), (unofficial)."''Non sibi sed patriae''" ( en, "Not for self but for country") (unofficia ...
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 by "specially designated, organized, selected, trained, and equipped forces using unconventional techniques and modes of employment," according to NATO. Special operations may include r ...
companies, such as
U.S. Army Special Forces
The United States Army Special Forces, colloquially known as the "Green Berets" due to their distinctive service headgear
Headgear, headwear, or headdress is the name given to any element of clothing which is worn on one's Human head, h ...
companies, Civil Affairs companies, Military Information Support Operations companies, and certain types of separate, numbered vice lettered,
Military Intelligence 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
Kansas () is a state in the Midwestern United States
The United States of America (USA), commonly known as the Uni ...
at
Fort Leavenworth
Fort Leavenworth is a United States Army installation located in Leavenworth County, Kansas
Leavenworth County (county code LV) is located in the U.S. state
In the United States
The United States of America (USA), commonly known ...
, with a greater number attending satellite schools administered by Fort Leavenworth at
Fort Belvoir
Fort Belvoir is a installation and a (CDP) in , United States. It was developed on the site of the former , seat of the prominent for whom Fairfax County was named. It was known as Camp A. A. Humphreys from 1917 to 1935 and Fort Belvoir aft ...
,
Fort LeeFort Lee may refer to:
* Fort Lee, New Jersey
Fort Lee is a borough
A borough is an administrative division in various English language, English-speaking countries. In principle, the term ''borough'' designates a self-governing walled town, alt ...
,
Virginia
Virginia (), officially the Commonwealth of Virginia, is a in the and regions of the , between the and the . The geography and climate of the are shaped by the and the , which provide habitat for much of its flora and fauna. The capit ...

,
Redstone Arsenal
Redstone Arsenal (RSA) is a United States Army
The United States Army (USA) is the 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 servic ...

, and
Fort Gordon
Fort Gordon, formerly known as Camp Gordon, is a United States Army
The United States Army (USA) is the land military branch, service branch of the United States Armed Forces. It is one of the eight Uniformed services of the United States, ...
. 960 graduated from the Leavenworth course in 2009 (the largest class in Army history).
American Revolution
The
Continental Army
The Continental Army was the army of the Thirteen Colonies and the Revolutionary-era United States. It was formed by the Second Continental Congress after the outbreak of the American Revolutionary War, and was established by a resolution of ...
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 American Civil War (also known by Names of the American Civil War, other names) was a civil war in the United States from 1861 to 1865, fought between northern U.S. state, states loyal to the Union (A ...
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 simply the Confederacy, was an unrecognized herrenvolk republic
A republic () is a form of government
A government is the system ...

, the
Confederate Army
The Confederate States Army, also called the Confederate Army or simply 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) ...
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 Vitézkötés; is an elaborate design of twisted cord or lace
Lace is a delicate fabric made of yarn or thread in an open weblike pattern, made by machine or by hand. Ge ...
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, trained, and equipped forces ...

and Aviation companies are usually commanded by majors.
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.
References
External links
Confederate Army rank insignia: A guideRank 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