The 4th Division Artillery (DIVARTY) began its story as Headquarters Battery, 4th Field Artillery Brigade, “Iron Gunner,” Nov. 19, 1917, under the command of Maj. Gen. Edwin Babbit, and was assigned to the 4th Division. The unit was organized for combat operations at Camp Greene, North Carolina, from Dec. 15, 1917, to Jan. 10, 1918. Headquarters, 4th Field Artillery Brigade, departed for World War I in Europe in the winter of 1918. Campaign participation included actions at Meuse-Argonne, Aisne-Marne, St. Mihiel, Champagne 1918, and Lorraine 1918. Upon returning stateside, the 4th Field Artillery Brigade was stationed at Camp Lewis, Washington, where it was inactivated Sept. 21, 1921, following the Armistice that ended World War I. The 4th Field Artillery Brigade was redesignated at Fort Sill, Oklahoma, Jan. 1, 1935, then was disbanded again Nov. 14, 1939.
Headquarters and Headquarters Battery, 4th Field Artillery, was reconstituted Sept. 10, 1940, as Headquarters Battery, 4th DIVARTY. The unit was activated Oct. 1, 1940, at Fort Benning, Georgia, under the command of Brig. Gen. Julian Barnes. Following reactivation, the unit deployed to Europe for combat operations against the Axis. Campaign participation included action at Normandy, Northern France, Rhineland, Ardennes-Alsace, and Central-Europe. 4th Division Artillery was inactivated March 5, 1946 at Camp Butler, North Carolina.
On July 6, 1948, at Fort Ord, California, the 4th DIVARTY was again activated. On April 1, 1957, at Fort Lewis Washington, the 4th DIVARTY was reorganized and redesignated as the 4th Infantry Division Artillery.
With the escalation of the Vietnam conflict, the 4th Infantry Division Artillery again followed the 4th Inf. Div. into battle. On July 21, 1966, from Fort Lewis and under the command of Brig Gen. Joseph Cutrona, the 4th Inf. Div. began deploying to South Vietnam. The DIVARTY would spend the next four years in South Vietnam providing fire support for the “Ivy” Division Soldiers during intense close combat operations. Campaign participation in Vietnam included action during Tet 69/Counteroffensive, Summer-Fall 1969, Winter-Spring 1970, Sanctuary Counteroffensive, Tet Counteroffensive, and Counteroffensive phases III-VII. By December 1970, the 4th DIVARTY returned from South Vietnam to Fort Carson. Also during 1970, 4th DIVARTY was redesignated as 4th DIVARTY (Mechanized). This last redesignation nicknamed the unit “Iron Gunners,” which complemented the “Iron Horse” Division.
With the realignment and downsizing of the Army force, 4th DIVARTY was reassigned to Fort Hood, Texas on Dec. 15, 1995, where it replaced the inactivating 2nd Armored Division Artillery.
On Dec. 16, 2004, the 4th DIVARTY began the transformation and restructuring process to become the 4th Fires Brigade, the Army’s first modular fires brigade, dividing all battalions except the 2nd Battalion, 20th Field Artillery Regiment, among the new brigade combat teams (BCTs) as fire support elements.
In 2007, the 4th Fires Brigade was inactivated and its headquarters reflagged as HHB, 41st Fires Brigade.
In October 2014, the DIVARTY was reconstituted as part of the Iron Horse Division and activated in October 2015 under the command of Col. Michael Oeschger, with oversight of 2nd Bn., 12th FA; 3rd Bn., 77th FA; and 3rd Bn., 29th FA.