Constituted 5 August 1917 in the National Army as the 321st Field Artillery, and assigned to the 82d Division

Organized 2 September 1917 at Camp Gordon, Georgia

Demobilized 26 May 1919 at Camp Dix, New Jersey

Reconstituted 5 June 1930 in the Organized Reserves; concurrently, consolidated with 321st Field Artillery (active) (constituted in July 1923 in the Organized Reserves as the 452d Field Artillery and organized in Georgia; redesignated 5 October 1929 as the 321st Field Artillery, an element of the 82d Division), and consolidated unit designated as the 321st Field Artillery, an element of the 82d Division (later designated as the 82d Airborne Division)

Reorganized and redesignated 30 January 1942 as the 321st Field Artillery Battalion
Ordered into active military service 25 March 1942 and reorganized at Camp Claiborne, Louisiana

Reorganized and redesignated 15 August 1942 as the 321st Glider Field Artillery Battalion; concurrently relieved from assignment to the 82d Airborne Division and assigned to the 101st Airborne Division

Inactivated 30 November 1945 in Germany

(Organized Reserves redesignated 25 March 1948 as the Organized Reserve Corps)

Redesignated 18 June 1948 as the 518th Airborne Field Artillery Battalion, an element of the 101st Airborne Division

Withdrawn 25 June 1948 from the Organized Reserve Corps and allotted to the Regular Army

Activated 6 July 1948 at Camp Breckinridge, Kentucky

Inactivated 1 April 1949 at Camp Breckinridge, Kentucky

Activated 25 August 1950 at Camp Breckinridge, Kentucky

Inactivated 1 December 1953 at Camp Breckinridge, Kentucky

Activated 15 May 1954 at Fort Jackson, South Carolina

Redesignated 1 July 1956 as the 321st Airborne Field Artillery Battalion

Relieved 25 April1957 from assignment to the 101st Airborne Division

Reorganized and redesignated 31 July 1959 as the 321st Artillery, a parent regiment

under the Combat Arms Regimental System

Redesignated 1 September 1971 as the 321st Field Artillery

Withdrawn 28 February 1987 from the Combat Arms Regimental System, reorganized under the United States Army Regimental System, and transferred to the United States Army Training and Doctrine Command

Withdrawn 15 January 1996 from the United States Army Training and Doctrine Command

Redesignated 1 October 2005 as the 321st Field Artillery Regiment

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DECORATIONS

Presidential Unit Citation (Army), Streamer embroidered BASTOGNE

French Croix de Guerre with Palm, World War II, Streamer embroidered NORMANDY

Netherlands Orange Lanyard

Belgian Fourragere 1940

Cited in the Order of the Day of the Belgian Army for action in France and Belgium

Belgian Croix de Guerre 1940 with Palm, Streamer embroidered BASTOGNE; cited in the Order of the Day of the Belgian Army for action at Bastogne

Republic of Vietnam Cross of Gallantry with Palm, Streamer embroidered VIETNAM 1968

Republic of Vietnam Cross of Gallantry with Palm, Streamer embroidered VIETNAM 1968-1969

Republic of Vietnam Cross of Gallantry with Palm, Streamer embroidered VIETNAM 1971

Republic of Vietnam Civil Action Honor Medal, First Class, Streamer embroidered VIETNAM 1968-1970

BY ORDER OF THE SECRETARY OF THE ARMY: