United States Army

United States Army
US Army logo.svg
Logo of the United States Army
Founded 14 June 1775; 242 years ago (1775-06-14) [1] [2]
Country   United States of America
Type Army
Role Land warfare
Size 476,000 Regular Army (2017) [3]
343,000 Army National Guard (2017)
199,000 Army Reserve (2017)
1,018,000 total uniformed personnel (2017)
330,000 civilian personnel
4,836 aircraft [4]
Part of

U.S. Department of Defense

Headquarters The Pentagon
Arlington County, Virginia, U.S.
Motto(s) "This We'll Defend"
Colors Black and gold [5] [6]          
March " The Army Goes Rolling Along"
Anniversaries Army Birthday: 14 June
Website Army.mil
Commander-in-Chief President Donald Trump
Secretary of Defense James Mattis
Secretary of the Army Mark Esper
Chief of Staff GEN Mark A. Milley
Vice Chief of Staff GEN James C. McConville
Sergeant Major of the Army SMA Daniel A. Dailey
Flag Flag of the United States Army.svg
Emblem of the Department of the Army Emblem of the United States Department of the Army.svg

The United States Army (USA) is the largest branch of the United States Armed Forces and performs land-based military operations. It is one of the seven uniformed services of the United States and is designated as the Army of the United States in the United States Constitution, Article 2, Section 2, Clause 1 and United States Code, Title 10, Subtitle B, Chapter 301, Section 3001. As the oldest and most senior branch of the U.S. military in order of precedence, [7] the modern U.S. Army has its roots in the Continental Army, which was formed (14 June 1775) to fight the American Revolutionary War (1775–1783)—before the United States of America was established as a country. [8] After the Revolutionary War, the Congress of the Confederation created the United States Army on 3 June 1784 to replace the disbanded Continental Army. [9] [10] The United States Army considers itself descended from the Continental Army, and dates its institutional inception from the origin of that armed force in 1775. [8]

As a uniformed military service, the U.S. Army is part of the Department of the Army, which is one of the three military departments of the Department of Defense. The U.S. Army is headed by a civilian senior appointed civil servant, the Secretary of the Army (SECARMY) and by a chief military officer, the Chief of Staff of the Army (CSA) who is also a member of the Joint Chiefs of Staff. In the fiscal year 2017, the projected end strength for the Regular Army (USA) was 476,000 soldiers; the Army National Guard (ARNG) had 343,000 soldiers and the United States Army Reserve (USAR) had 199,000 soldiers; the combined-component strength of the U.S. Army was 1,018,000 soldiers. [3] As a branch of the armed forces, the mission of the U.S. Army is "to fight and win our Nation's wars, by providing prompt, sustained, land dominance, across the full range of military operations and the spectrum of conflict, in support of combatant commanders". [11] The branch participates in conflicts worldwide and is the major ground-based offensive and defensive force of the United States.


The United States Army serves as the land-based branch of the Section 3062 of Title 10, U.S. Code defines the purpose of the army as: [12] [13]

  • Preserving the peace and security and providing for the defense of the United States, the Commonwealths and possessions and any areas occupied by the United States
  • Supporting the national policies
  • Implementing the national objectives
  • Overcoming any nations responsible for aggressive acts that imperil the peace and security of the United States
Other Languages
Bân-lâm-gú: Bí-kok Lio̍k-kun
беларуская: Армія ЗША
Esperanto: Usona Terarmeo
한국어: 미국 육군
қазақша: АҚШ әскері
latviešu: ASV Armija
Nederlands: United States Army
پنجابی: امریکی فوج
русский: Армия США
Simple English: United States Army
slovenčina: United States Army
srpskohrvatski / српскохрватски: Kopnena vojska Sjedinjenih Država
svenska: USA:s armé
українська: Армія США
Tiếng Việt: Lục quân Hoa Kỳ
粵語: 美國陸軍
中文: 美国陆军