4th Infantry Division (United States)

4th Infantry Division (United States)
Army · CC BY-SA 4.0 · source
Unit name	4th Infantry Division
Dates	1917–present
Country	United States
Branch	United States Army
Type	Infantry
Size	Division
Garrison	Fort Carson
Motto	Steadfast and Loyal
Nickname	Ivy Division
Battles	See Combat Operations

4th Infantry Division (United States)

The 4th Infantry Division traces its origins to World War I mobilization at Camp Greene (North Carolina), deploying to the Western Front and later serving in World War II, Vietnam War, and Iraq War, while participating in Cold War rotations to West Germany and supporting operations in Afghanistan. The division has been stationed at Fort Carson and reorganized under United States Army modular force reforms, earning campaign credit and decorations including citations from the Army Distinguished Service Medal and unit awards tied to engagements ranging from the Meuse-Argonne Offensive to the Siege of Sadr City.

History

Organized in 1917 at Camp Greene (North Carolina), the division deployed to the American Expeditionary Forces in the Great War, fighting in the Aisne-Marne Offensive, Meuse-Argonne Offensive, and holding lines near the St. Mihiel salient. Postwar demobilization returned elements to the National Guard and Regular Army establishments, with interwar assignments including training at Camp Jackson (South Carolina) and doctrine development influenced by leaders from Franklin D. Roosevelt administration-era military policy. Reactivated and reconstituted for World War II, the division trained at Camp Gordon and landed at Utah Beach during Operation Overlord, advancing through Normandy, participating in the Battle of Hürtgen Forest, and crossing the Rhine River into Germany. During the Cold War the division rotated to West Germany as part of United States Army Europe deterrence with ties to NATO commands, later converting to mechanized and armored configurations before deploying multiple brigade combat teams to Vietnam War combat operations in the Central Highlands and later to Operation Iraqi Freedom and Operation Enduring Freedom deployments from Fort Carson. Modular transformation in the 2000s reorganized the division into brigade combat team structures aligned with United States Army Forces Command readiness cycles.

Organization and Structure

The division is organized into multiple brigade combat teams, including 1st Brigade Combat Team (4th Infantry Division), 2nd Brigade Combat Team (4th Infantry Division), and 3rd Brigade Combat Team (4th Infantry Division), plus division-level assets such as a Division Artillery (DIVARTY), Special Troops Battalion, and a Combat Aviation Brigade (4th Infantry Division). Headquarters and Headquarters Battalion coordinates with FORSCOM and the Eighth United States Army for joint and combined arms training with partners such as United States Air Force units at Peterson Space Force Base and multinational exercises with German Army, British Army, and French Army forces. Support units include 4th Sustainment Brigade logistics elements, signal detachments aligned with United States Army Cyber Command, and intelligence sections interoperating with Defense Intelligence Agency and National Geospatial-Intelligence Agency products.

Combat Operations

In World War I the division fought in the Aisne-Marne Offensive and the Meuse-Argonne Offensive under First United States Army command, later occupying sectors on the Western Front. In World War II the division landed in Normandy during Operation Overlord, fought in the Battle of the Bulge theater, and advanced through France and Germany in campaigns coordinated with 21st Army Group and U.S. Seventh Army operations. During the Vietnam War elements conducted counterinsurgency and search-and-destroy operations in the Central Highlands and around Pleiku, coordinating with Army of the Republic of Vietnam counterparts and advising I Corps and II Corps regions. In the post-9/11 era the division deployed brigade combat teams to Iraq for Operation Iraqi Freedom including operations in Sadr City and the Al Anbar Province, and to Afghanistan under Operation Enduring Freedom supporting counterinsurgency efforts with Provincial Reconstruction Teams and coalition partners. The division has also supported humanitarian assistance and disaster relief in coordination with United States Northern Command and civil authorities during domestic crises.

Notable Units and Commanders

Distinct units historically associated with the division include the 8th Infantry Regiment (United States), 12th Infantry Regiment, 22nd Infantry Regiment, and artillery elements such as the 10th Field Artillery Regiment, as well as mechanized and aviation elements like the 10th Combat Aviation Brigade predecessors. Prominent commanders who led the division include wartime leaders and postwar generals who later served in senior positions within United States Army Forces Command and on the Joint Chiefs of Staff staff, with ties to figures who commanded at corps or theater level during World War II and the Cold War; commanders have included recipients of the Distinguished Service Cross and the Silver Star for actions during major campaigns.

Equipment and Insignia

The division transitioned through infantry, mechanized, and modular equipment sets, fielding M4 carbine small arms, crew-served systems such as the M2 Browning heavy machine gun, armored vehicles including the M2 Bradley, main battle tanks like the M1 Abrams, artillery pieces such as the M109 Paladin, and aviation assets including the AH-64 Apache and UH-60 Black Hawk. The division shoulder sleeve insignia—an ivy leaf rendered in divisional colors—symbolizes the Roman numeral IV and echoes unit nicknames; distinctive unit insignia and unit crests reflect campaign history with symbols referencing Normandy landings and Meuse-Argonne service, while unit patches are regulated by United States Army Institute of Heraldry standards.

Category:Infantry divisions of the United States Army