5th Infantry Regiment (United States)

5th Infantry Regiment (United States) The 5th Infantry Regiment is a regular infantry regiment of the United States Army with service dating to 1808. It has served in multiple conflicts including the War of 1812, the Mexican–American War, the American Civil War, the Spanish–American War, both World War I and World War II, the Korean War, the Vietnam War, and operations in Iraq and Afghanistan. The regiment's lineage and honors reflect participation in frontier campaigns, major set-piece battles, and modern counterinsurgency operations involving units of the United States Army Infantry School and a variety of brigade combat teams.

History

Constituted in 1808 during the administration of Thomas Jefferson, the regiment's early service included deployments along the Great Lakes and actions against British forces in the War of 1812 and as part of campaigns under William Henry Harrison and Zebulon Pike. During the Mexican–American War, regimental elements served with Winfield Scott's expedition and in engagements such as the Battle of Cerro Gordo and the Siege of Veracruz. In the American Civil War, the regiment fought in theaters against Confederate forces commanded by officers like Robert E. Lee and Stonewall Jackson, participating in campaigns under Ulysses S. Grant and William Tecumseh Sherman. Later 19th-century service included frontier duty during campaigns against various Native American nations, and the regiment took part in the Spanish–American War campaigns in Cuba and the Philippines where service intersected with operations by figures such as Wesley Merritt and Arthur MacArthur Jr..

In the 20th century, the regiment was reorganized for World War I under the National Defense Act of 1916 and saw action in the Meuse-Argonne Offensive alongside divisions like the 1st Division (United States). In World War II units of the regiment participated in the North African campaign, the Italian Campaign, and later in the Pacific and European theaters, engaging formations such as the German Wehrmacht and Imperial Japanese forces. During the Korean War, battalions fought along the Pusan Perimeter and in offenses and withdrawals influenced by commanders including Douglas MacArthur. In Vietnam War deployments, the regiment's companies and battalions operated in regions contested by the People's Army of Vietnam and the Viet Cong, supporting operations with units like the 101st Airborne Division. Post-9/11, elements served in Operation Iraqi Freedom and Operation Enduring Freedom.

Organization and Lineage

The regiment's formal lineage traces through multiple reorganizations under the United States Army Regimental System and policies of the Department of Defense. Historically organized into numbered battalions and companies, the regiment has been assigned at times to divisions and brigades such as the 2nd Infantry Division, the 3rd Infantry Division, and separate brigade combat teams including the 173rd Airborne Brigade. Company-level units have been redesignated, consolidated, or inactivated consistent with army-wide restructurings directed by the Chief of Staff of the Army and implemented at posts like Fort Benning and Fort Drum. The regiment's regimental distinctive insignia and coat of arms reflect heraldic lineage approved by the Institute of Heraldry. Contemporary organization includes active, reserve, and training elements aligned with the United States Army Training and Doctrine Command and with home stations at installations including Fort Leonard Wood.

Campaigns and Engagements

The regiment's campaign credits encompass a wide range of operations: - Early 19th century: actions during the War of 1812 and frontier campaigns involving Tecumseh's confederacy. - Mexican War: Battle of Molino del Rey, Battle of Chapultepec under Winfield Scott. - Civil War: engagements in the Peninsula Campaign, Battle of Antietam, Battle of Gettysburg, and the Sherman's March to the Sea. - Indian Wars: campaigns across the Great Plains and Southwest United States. - Spanish–American War and Philippine service during the Philippine–American War. - World War I: involvement in the Meuse-Argonne Offensive. - World War II: operations in the North African campaign, Italian Campaign, and later actions in Europe. - Korean War: fighting around the Chosin Reservoir and offensive/defensive operations across the 38th Parallel. - Vietnam War: counterinsurgency and conventional operations in provinces contested with Viet Cong forces. - 21st century: deployments to Iraq, Afghanistan, and participation in Operation Enduring Freedom and Operation Iraqi Freedom.

Honors and Decorations

The regiment and its subordinate units have received numerous unit awards and decorations from the Department of the Army and allied governments. Honors include Presidential Unit Citation awards for extraordinary heroism in engagements alongside divisions such as the 1st Infantry Division; Valorous Unit Award citations for actions during Operation Iraqi Freedom; campaign streamers from the United States Army Center of Military History denoting service in named campaigns; foreign decorations awarded by governments like France and South Korea for contributions in World War I and the Korean War respectively; and service medals tied to federal statutes such as the National Defense Service Medal criteria. Individual soldiers have received decorations including the Medal of Honor, Distinguished Service Cross, and Silver Star for gallantry while assigned to regimental elements.

Notable Commanders and Personnel

Prominent leaders and figures associated with the regiment include early commanders like Winfield Scott and Alexander Macomb, Civil War-era officers such as John A. Logan, and 20th-century leaders who guided battalions through global conflicts including Douglas MacArthur (through theater association) and division commanders of the 1st Infantry Division. Decorated personnel have included recipients of the Medal of Honor and senior noncommissioned officers who advanced reforms in infantry tactics and training at institutions like the Infantry School at Fort Benning. The regiment's alumni network spans politicians, career officers, and decorated veterans who served in capacities from staff roles in the Pentagon to field commands in multinational coalitions under NATO.

Category:Infantry regiments of the United States Army