World War I The 333rd Field Artillery Regiment was originally constituted in the
National Army on 5 August 1917 and assigned to the
86th Division. The regiment, less the 2nd Battalion, was organized from 25 to 29 August 1917 at
Camp Grant,
Illinois, while the 2nd Battalion was organized in September 1917 at Camp Grant.
Interwar period The regiment arrived at the
port of New York in January and February 1919 on various vessels and was demobilized on 23 January 1919 at Camp Grant. Pursuant to the
National Defense Act of 1920 it was reconstituted in the
Organized Reserve on 13 September 1929, assigned to the 86th Division, and allotted to the Sixth
Corps Area. It was relieved from the 86th Division on 5 October 1929 and assigned to the 185th Field Artillery Brigade,
XVI Corps. It was initiated (activated) in December 1930 with the entire regiment at
Chicago, and was inactivated on 2 October 1937 by relief of personnel. The regiment conducted summer training at
Camp McCoy,
Wisconsin, and the primary
ROTC "feeder" school for new Reserve lieutenants for the regiment was the
University of Chicago.
World War II The 333rd Field Artillery Regiment, Organized Reserve, was disbanded on 22 August 1942 in an inactive status. It was reconstituted in the
Regular Army on 13 October 1942 and was concurrently consolidated with the 333rd Field Artillery, which had been earlier constituted 5 May 1942 in the Regular Army and activated on 5 August 1942 at
Camp Gruber,
Oklahoma. The regiment was broken up on 12 February 1943, with the Headquarters and Headquarters Battery reorganized and redesignated as the Headquarters and Headquarters Battery, 333rd Field Artillery Group, the 1st Battalion as the 333rd Field Artillery Battalion, and the 2nd Battalion as the 969th Field Artillery Battalion. The Headquarters and Headquarters Battery, 333rd Field Artillery Group was inactivated on 30 December 1945 at the
Hampton Roads Port of Embarkation,
Virginia, the 333rd Field Artillery Battalion was disbanded on 10 June 1945 in
Germany, and the 969th Field Artillery Battalion was inactivated on 15 April 1946 at the New York Port of Embarkation.
Cold War 333rd Field Artillery Battalion The 333rd Field Artillery Battalion was reconstituted on 27 November 1946 in the Organized Reserve, redesignated as the 446th Field Artillery Battalion, and activated on 15 February 1947 at
Birmingham, Alabama. The Organized Reserve was redesignated on 25 March 1948 as the Organized Reserve Corps, and redesignated on 9 July 1952 as the Army Reserve. The location of the battalion headquarters was changed on 22 March 1949 to
Dothan, Alabama; on 1 February 1951 to
Bartow, Florida; and on 18 December 1952 to
Lakeland, Florida. The Battalion was inactivated on 25 June 1959 at Lakeland and concurrently withdrawn from the Army Reserve and allotted to the Regular Army.
969th Field Artillery Battalion The 969th Field Artillery Battalion was activated on 17 June 1946 at Fort Sill, Oklahoma, and inactivated on 15 June 1949. It was activated on 18 March 1955 in
Korea, and inactivated on 25 June 1958.
333rd Field Artillery Regiment The Headquarters and Headquarters Battery, 333rd Field Artillery Group, and the 446th and 969th Field Artillery Battalions were consolidated, reorganized, and redesignated on 1 July 1959 as the 333rd Artillery, a parent regiment under the
Combat Arms Regimental System. Redesignated 1 September 1971 as the 333rd Field Artillery. It was withdrawn on 16 August 1987 from the Combat Arms Regimental System and reorganized under the
United States Army Regimental System.
Modern No regimental elements are currently active. ==Campaigns==