The 4th Infantry Division Artillery ("Ivy Gunners") or DIVARTY is the force fires headquarters for the 4th Infantry Division of the United States Army. The 4th DIVARTY has been active from 1917 to 1921, 1935–1939, 1940–1946, 1948–1995, 1996–2007, and most recently reactivated in 2015. The DIVARTY has operational service in World War I, World War II, Vietnam, and Operation Iraqi Freedom. History The unit was first constituted 19 November 1917 as Headquarters Battery, 4th Field Artillery Brigade, and assigned to the 4th Infantry Division. The unit was organized for combat operations at Camp Greene, North Carolina from 15 December 1917 to 10 January 1918. In the winter of 1918, the 4th Field Artillery Brigade departed for World War I in Europe. Upon returning stateside, the 4th Field Artillery Brigade was stationed at Camp Lewis, Washington, where it was inactivated 21 September 1921. 4th Field Artillery Brigade was redesignated as Headquarters and Headquarters Battery, 4th Field Artillery Brigade at Fort Sill, Oklahoma, 1 January 1935, and then disbanded 14 November 1939. Headquarters and Headquarters Battery, 4th Field Artillery was reconstituted 10 September 1940 as Headquarters and Headquarters Battery, 4th Division Artillery (DIVARTY). Headquarters and Headquarters Battery, 4th Division Artillery was activated 1 October 1940 at Fort Benning, Georgia. The unit participated in multiple campaigns of World War II. The 4th Division Artillery was inactivated 5 March 1946, at Camp Butler, North Carolina. On 6 July 1948, at Fort Ord, California, Headquarters and Headquarters Battery, 4th Division Artillery, was again activated. 1 April 1957 at Fort Lewis, Washington, Headquarters and Headquarters Battery, 4th Division Artillery was reorganized and redesignated as Headquarters and Headquarters Battery, 4th Infantry DIVARTY. By December 1970, the unit returned from South Vietnam to Fort Carson, Colorado. During that same year, the unit redesignated as Headquarters and Headquarters Battery, 4th Infantry Division Artillery (Mechanized). This redesignation named the Division Artillery the "Iron Gunners," which complemented the "Ironhorse" Division. With the realignment and downsizing of the Army force, the unit was reassigned to Fort Hood, Texas on 15 December 1995. On 16 December 2004, the transformation and restructuring of the 4th Infantry Division Artillery marked the Army's first modular fires brigade. The brigade inactivated 16 April 2007, at Fort Hood, Texas because of the realignment of Army units. On 6 May 2015, the unit was redesignated as Headquarters and Headquarters Battery, 4th Infantry Division Artillery at Fort Carson, Colorado, and