The 11th Field Artillery Regiment was constituted on 3 June 1916 in the Regular Army at
Camp Douglas. Two months after the
U.S. declaration of war following the
sinking of RMS Lusitania, 10 officers and 200 enlisted men of the
6th Field Artillery were transferred to the newly formed 11th Field Artillery at
Camp Harry J. Jones near
Douglas, Arizona. These numbers were supplemented by draftees from
New York,
Ohio,
Missouri, and
California. At full wartime strength, the 11th had 63 officers, 1496 enlisted, and 24 guns. Four battalions of the 11th Field Artillery Regiment served in the Vietnam War. The 1st Battalion served with the
9th Infantry Division. The 2d Battalion served with the
101st Airborne Division. The 6th Battalion served with the
11th Infantry Brigade. The 7th Battalion served the
25th Infantry Division. Robert Kalsu, one of two
NFL players killed in Vietnam, served with Battery A, 2d Battalion in the 101st Airborne Division. In 2025, 2nd Battalion began receiving
M142 HIMARS multiple rocket launchers. From 15 April 2026 until 16 April 2026, the 2nd Battalion forward deployed the
M142 HIMARS in the
Philippines for first time. ==Lineage==