U.S. Army Infantry Branch

U.S. Army Infantry Branch
Name	U.S. Army Infantry Branch
Founded	1775
Country	United States
Branch	United States Army
Type	Infantry
Role	Close combat, maneuver, reconnaissance
Motto	"Follow Me"

U.S. Army Infantry Branch

The U.S. Army Infantry Branch is the principal close-combat force of the United States Army, responsible for seizing, holding, and defending terrain in support of national strategy. Originating in the Continental Army era, the branch has engaged in conflicts from the American Revolutionary War and War of 1812 through the American Civil War, World War I, World War II, the Korean War, the Vietnam War, the Gulf War, operations in Iraq War and War in Afghanistan (2001–2021), and numerous peacekeeping and contingency operations. The Infantry has developed enduring institutions, awards, and personalities tied to West Point, the United States Colored Troops, and units such as the 1st Infantry Division, 82nd Airborne Division, and 10th Mountain Division.

History

The branch traces roots to the Continental Army and regiments raised by the Second Continental Congress during the American Revolutionary War. During the War of 1812 and the Mexican–American War, infantry formations evolved alongside leaders like Andrew Jackson and Winfield Scott. The Civil War saw mass mobilization and innovations exemplified at the Battle of Gettysburg and the Siege of Vicksburg under generals such as Ulysses S. Grant and Robert E. Lee. Industrialized warfare in World War I produced trench combat lessons consolidated after engagements like the Battle of Cantigny and the Meuse-Argonne Offensive. In World War II, infantry actions in the Normandy landings, Battle of the Bulge, and the Pacific War against Imperial Japan reshaped amphibious and combined-arms practice. Cold War conflicts including the Korean War and Vietnam War prompted airborne, airmobile, and jungle adaptations under commanders like Douglas MacArthur and William Westmoreland. Post-Cold War operations in Somalia, Bosnia and Herzegovina, and the Kosovo War further modified force structure prior to large-scale deployments in Operation Iraqi Freedom and Operation Enduring Freedom.

Roles and Responsibilities

Infantry units conduct close combat, offensive and defensive operations, patrolling, reconnaissance, and stability tasks across diverse environments such as deserts, mountains, urban terrain, and littoral zones. They enable maneuver for formations like the III Corps and U.S. Army Europe and Africa by seizing key terrain, providing security for logistics convoys in operations like Operation Restore Hope, and conducting raids similar to those in Operation Just Cause. Infantry soldiers support interoperability with partners including NATO and special operations forces such as United States Army Special Forces during multinational campaigns like Operation Enduring Freedom and Operation Iraqi Freedom.

Organization and Units

The branch fields infantry at squad, platoon, company, battalion, brigade, division, and corps echelons within formations including the 1st Infantry Division, 3rd Infantry Division, 4th Infantry Division, 25th Infantry Division, 82nd Airborne Division, 101st Airborne Division (Air Assault), and the 10th Mountain Division. Specialized elements include Ranger Regiment battalions, light infantry brigades, mechanized infantry equipped for service in armored formations such as III Armored Corps, airborne infantry in 82nd Airborne Division, and air assault units tied to doctrines developed at Fort Benning and Fort Bragg. Theater-level commands like United States Northern Command and United States Central Command task-organize infantry units for contingency operations and security cooperation.

Training and Qualification

Initial entry training occurs at institutions like Fort Jackson, Fort Benning, and Fort Sill with basic combat training and one-station unit training culminating in qualification for the Infantry School’s courses. Advanced and specialized schools include the United States Army Infantry School, the Ranger School at Fort Moore, the Airborne School at Joint Base McGuire–Dix–Lakehurst, and the Air Assault School. Noncommissioned officer development proceeds through the Sergeants Major Academy and the Advanced Individual Training pipeline, while officers receive instruction at United States Military Academy and the Officer Candidate School. Qualification badges and tabs such as the Combat Infantryman Badge, Expert Infantryman Badge, and the Ranger Tab mark proficiency and combat service.

Equipment and Weapons

Infantry equipment ranges from personal small arms like the M4 carbine, M16 rifle, and M249 Squad Automatic Weapon to crew-served weapons including the M240 machine gun, Javelin (missile), and the AT4. Support weapons include mortars such as the M252 mortar, anti-armor systems like the TOW missile, and indirect fires coordinated with artillery units wielding the M777 howitzer. Mobility and protection derive from vehicles like the M2 Bradley, Stryker, High Mobility Multipurpose Wheeled Vehicle, and mountain or cold-weather systems used by the 10th Mountain Division. Communications and surveillance tools include systems interoperable with Army Tactical Command and Control Systems and unmanned aerial systems seen in modern counterinsurgency campaigns.

Doctrine and Tactics

Infantry doctrine emphasizes combined arms integration, maneuver warfare, fire and movement, and small-unit leadership codified in publications developed at the United States Army Training and Doctrine Command and tested in exercises such as Exercise Saber Strike and Operation Big Forge. Tactics vary from urban operations executed in challenges like Battle of Fallujah to mountain warfare exemplified by Korean War engagements, amphibious assaults akin to Normandy landings, and air assault maneuvers used during Vietnam War operations. Counterinsurgency doctrine refined after Iraq War and Afghanistan campaigns integrates intelligence from agencies like Defense Intelligence Agency and joint doctrine from United States Joint Forces Command.

Insignia and Traditions

The infantry crossed rifles insignia and items like the Infantry Blue Cord symbolize branch heritage; awards such as the Medal of Honor, Distinguished Service Cross, and Soldier's Medal commemorate valor. Traditions include the Infantry Ball, ceremonies at Arlington National Cemetery, and unit lineages tracing to regiments honored at monuments like the Vietnam Veterans Memorial. Notable infantry figures include leaders and Medal of Honor recipients from eras spanning George Washington to modern commanders and enlisted leaders who shaped doctrine, unit identity, and esprit de corps.

Category:United States Army