U.S. Army

Overview

The United States Army is the oldest and largest branch of the U.S. Armed Forces, tracing its origins to the Continental Army established by the Second Continental Congress on June 14, 1775. As the primary land warfare service, the Army is responsible for sustained ground combat operations, territorial control, and the projection of power across the full spectrum of conflict.

With approximately 450,000 active-duty soldiers and an additional 340,000 in the Army Reserve and Army National Guard, the Army maintains a global presence across more than 140 countries. It is organized into active-duty, Reserve, and National Guard components, giving it unmatched depth and flexibility.

The Army is divided into branches such as Infantry, Armor, Aviation, Field Artillery, Engineers, Signal, Military Intelligence, and Special Forces. Each branch brings specialized capabilities that combine to form the decisive land power of the joint force.

Beyond combat, the Army provides critical humanitarian assistance, disaster relief, and nation-building support around the world. Its soldiers are trained to operate in every environment — from arctic tundra to desert sands to dense urban terrain — making it one of the most versatile military forces in the world.

History

The United States Army was born on June 14, 1775, when the Second Continental Congress authorized the enlistment of riflemen to serve the united colonies. Under General George Washington, the Continental Army endured the hardships of Valley Forge, crossed the Delaware River on Christmas night 1776, and ultimately defeated the British at Yorktown in 1781, securing American independence.

Through the 19th century, the Army expanded the nation's frontiers, fought the War of 1812, the Mexican-American War (1846–1848), and the devastating Civil War (1861–1865) — the bloodiest conflict in American history, pitting the Union Army against Confederate forces in four years of brutal fighting.

World War I transformed the Army into a modern mass military. American Expeditionary Forces under General John "Black Jack" Pershing played a decisive role on the Western Front, including the pivotal Battle of Belleau Wood. World War II saw the Army at its greatest scale — over 8 million soldiers deployed across two global theaters. Generals Eisenhower, Patton, Marshall, and MacArthur led campaigns from North Africa to Normandy to the Philippines.

The Cold War brought Korea (1950–1953), Vietnam (1965–1975), and a massive NATO presence in Europe. The Gulf War (1991) demonstrated the post-Cold War Army's overwhelming conventional capabilities, while the post-9/11 era brought nearly two decades of counterinsurgency operations in Afghanistan and Iraq.

Mission

The Army's official mission is to deploy, fight, and win the nation's wars by providing ready, prompt, and sustained land dominance at every echelon of war.

This mission encompasses far more than battlefield victory. The Army provides the foundational element of the joint force — the ability to close with and destroy the enemy, seize and hold terrain, and establish the stable conditions necessary for lasting peace. No other service can replicate the Army's ability to control ground and sustain operations over extended periods.

In practice, this means the Army must be ready across the full spectrum of military operations: large-scale combat against peer adversaries, counterterrorism and counterinsurgency, peacekeeping and stability operations, humanitarian assistance and disaster relief, and defense support to civil authorities at home.

The Army also trains and advises partner nation militaries around the world, building allied capacity that extends American influence and deters potential adversaries without requiring direct U.S. involvement.

Major Commands

• Forces Command (FORSCOM) — Trains, mobilizes, deploys, and sustains active-duty and Reserve component forces; the Army's primary operational command for continental U.S. forces.
• Training and Doctrine Command (TRADOC) — Recruits, trains, and educates soldiers; develops Army doctrine, concepts, and capabilities for the future force.
• Army Materiel Command (AMC) — Develops, acquires, and delivers equipment, logistics, and technology solutions to sustain Army forces worldwide.
• U.S. Army Europe and Africa (USAREUR-AF) — Commands Army forces in Europe and Africa, supporting NATO commitments and theater security cooperation.
• U.S. Army Pacific (USARPAC) — Commands Army forces in the Indo-Pacific region, maintaining readiness to deter and defeat threats across the Pacific theater.
• U.S. Army Special Operations Command (USASOC) — Commands all Army special operations forces including Rangers, Special Forces (Green Berets), and the 160th Special Operations Aviation Regiment (Night Stalkers).
• U.S. Army Cyber Command (ARCYBER) — Directs and conducts cyberspace operations to defend Army networks and support offensive cyber capabilities across the joint force.

Traditions, Motto & Symbols

Motto: "This We'll Defend" Appearing on the Army seal since 1778, this motto reflects the Army's foundational purpose — defending the nation and its Constitution against all enemies, foreign and domestic.

Official Song: The Army Goes Rolling Along Originally composed in 1908 as the "Caisson Song" by Lieutenant Edmund Gruber, the song celebrates the field artillery and has become the Army's official march, sung and played at installations worldwide.

Colors: Black and Gold Black represents iron — symbolizing the Army's strength and determination. Gold represents excellence and the high standards expected of every soldier.

The Army Birthday Cake Ceremony: Every June 14, soldiers celebrate Army Birthday with a traditional cake-cutting ceremony. The first slice goes to the oldest soldier present, who passes a piece to the youngest — symbolizing the transfer of knowledge and experience from one generation to the next.

Reveille and Retreat: The daily playing of Reveille at sunrise and Retreat at sunset marks the raising and lowering of the flag on Army posts — a centuries-old tradition connecting today's soldiers to the Revolutionary War.

The Army-Navy Game: Played annually since 1890, this college football rivalry between Army's Black Knights and Navy's Midshipmen is one of the most storied traditions in American sports, uniting all branches in friendly competition.

Career Paths

The Army offers career opportunities for enlisted soldiers, warrant officers, and commissioned officers across more than 150 Military Occupational Specialties (MOS).

Enlisted Soldiers enter through Basic Combat Training (BCT) followed by Advanced Individual Training (AIT) in their chosen MOS. Key career fields include Infantry (11 series), Armor (19 series), Aviation (15 series), Military Intelligence (35 series), Signal (25 series), Medical (68 series), and Logistics (92 series).

Warrant Officers are technical and tactical experts, particularly valued in aviation (helicopter pilots), intelligence, and cyber operations. They hold a unique rank between enlisted and commissioned officers and are among the Army's most experienced specialists.

Commissioned Officers are college graduates who receive their commissions through the United States Military Academy (West Point), Reserve Officers' Training Corps (ROTC), or Officer Candidate School (OCS). Officers lead from platoon leader to Army Chief of Staff.

Special Operations: Elite career paths include Army Rangers (75th Ranger Regiment), Special Forces — Green Berets — (1st through 20th Special Forces Groups), Delta Force (1st SFOD-D), and the 160th Special Operations Aviation Regiment (Night Stalkers).

Education Benefits: The Army provides the Post-9/11 GI Bill, Montgomery GI Bill, Army College Fund, Tuition Assistance for active-duty soldiers, and Army ROTC scholarships.

FAQ

How do I join the U.S. Army? Contact a local Army recruiter or visit GoArmy.com. Requirements include U.S. citizenship or permanent resident status, a high school diploma or GED, passing the Armed Services Vocational Aptitude Battery (ASVAB), and meeting physical fitness and medical standards. Enlistment contracts typically range from 2 to 6 years of active duty.

What is the minimum enlistment commitment? Standard enlistment contracts are 4 years of active-duty service with an additional 4 years in the Individual Ready Reserve (IRR). Shorter 2-year options exist for certain programs, and longer commitments may come with enlistment bonuses for high-demand specialties.

What benefits does Army service include? Benefits include competitive base pay, Basic Allowance for Housing (BAH), Basic Allowance for Subsistence (BAS), comprehensive Tricare healthcare for soldiers and dependents, 30 days paid vacation per year, life insurance, and GI Bill education benefits after service.

What is the difference between active duty, Reserve, and National Guard? Active-duty soldiers serve full-time. Army Reserve soldiers serve part-time (one weekend per month, two weeks per year) and can be mobilized for federal missions. Army National Guard soldiers serve part-time but respond to both federal missions and state emergencies under their governor's command.

Are all combat roles open to women? Yes. Since 2016, all combat roles — including Infantry, Armor, Special Forces, and Ranger Regiment — are open to women who meet the same standards as their male counterparts. Women serve in every branch and have reached the Army's highest positions.