The 2nd Battalion, 122nd Artillery was deployed to help suppress the April 1968 Chicago riots.Detachment 1, 1st Battalion, 122nd Artillery was deployed to Afghanistan in support of the 1-178 Infantry Battalion in support of Operation Freedoms Sentinel.
Mustered into Federal service 18 May 1898 as the 7th Illinois Volunteer Infantry; mustered out of Federal service 20 October 1898 and resumed state status as the 7th Infantry Regiment
Mustered into Federal service 27 June 1916; mustered out of Federal service 26 January 1917
Drafted into Federal service 5 August 1917
Converted and redesignated 12 October 1917 as the 108th Ammunition Train and 108th Supply Train and assigned to the 33d Division
Reorganized 26 June 1919 in the Illinois National Guard at Chicago as the 7th Infantry
Converted, reorganized, and redesignated 1 May 1921 as the 2d Field Artillery
Redesignated 13 September 1921 as the 124th Field Artillery and assigned to the 33d Division
Inducted into Federal service 5 May 1941 at Chicago
Regiment broken up 12 February 1942 and its elements reorganized and redesignated as follows: Headquarters and Headquarters Battery disbanded; 1st Battalion as the 1st Battalion, 208th Field Artillery, and relieved from assignment to the 33d Division; 2d Battalion as the 124th Field Artillery Battalion, an element of the 33d Infantry Division
1st Battalion, 208th Field Artillery, reorganized and redesignated 1 March 1943 as the 208th Field Artillery Battalion. Inactivated 9 April 1946 at Camp Kilmer, New Jersey. Assigned 5 July 1946 to the 33d Infantry Division. Reorganized and Federally recognized 15 March 1948 at Chicago
124th Field Artillery Battalion inactivated 5 February 1946 in Japan. Reorganized and Federally recognized 4 February 1947 at Chicago
208th and 124th Field Artillery Battalions consolidated 1 March 1959 with the 122d Field Artillery Battalion to form the 122d Artillery, a parent regiment under the Combat Arms Regimental System, to consist of the 1st, 2d, 3d, and 4th Howitzer Battalions, elements of the 33d Infantry Division
Reorganized 1 April 1963 to consist of the 1st, 2d, and 3d Battalions, elements of the 33d Infantry Division
Reorganized 1 February 1968 to consist of the 2d Battalion, an element of the 33d Infantry Brigade
Redesignated 1 May 1972 as the 122d Field Artillery
Reorganized 1 September 1996 to consist of the 2d Battalion, an element of the 34th Infantry Division
Reorganized 1 October 1997 to consist of the 2d Battalion, an element of the 35th Infantry Division
Ordered into active Federal service 16 November 2003 at home stations; released from active Federal service 13 May 2005 and reverted to state control
Redesignated 1 October 2005 as the 122d Field Artillery Regiment
Relieved 1 September 2006 from assignment to the 35th Infantry Division and assigned to the 33d Infantry Brigade Combat Team
Ordered into active Federal service 2 October 2008 at home stations; released from active Federal service 5 November 2009 and reverted to state control ANNEX
Constituted 1 July 1897 in the Illinois National Guard as a squadron of cavalry and organized from existing elements
Expanded, reorganized, and mustered into Federal service 21 May 1898 at Springfield as the 1st Illinois Volunteer Cavalry; mustered out of Federal service 11 October 1898 at Fort Sheridan, Illinois
Reorganized in 1899 in the Illinois National Guard as a squadron of cavalry. Expanded, reorganized, and redesignated 22 June 1899 as the 1st Cavalry
Mustered into Federal service 27 June 1916; mustered out of Federal service 17 November 1916 at Fort Sheridan, Illinois.
Chicago elements of the regiment converted and redesignated 9 June 1917 as the 2d Field Artillery
Field Artillery drafted into Federal service 5 August 1917
Reorganized and redesignated 21 September 1917 as the 122d Field Artillery and assigned to the 33d Division
Demobilized 7–8 June 1919 at Camp Grant, Illinois
Reorganized 11 November 1921 in the Illinois National Guard at Chicago as the 1st Field Artillery
Redesignated 13 September 1921 as the 122d Field Artillery and assigned to the 33d Division
Inducted into Federal service 5 March 1941 at Chicago
Regiment broken up 12 February 1942 and its elements reorganized and redesignated as follows:
* Headquarters and Headquarters Battery disbanded
* 1st Battalion as the 122d Field Artillery Battalion, an element of the 33d Infantry Division;
* 122d Field Artillery Battalion inactivated 5 February 1946 in Japan Consolidated 18 December 1946 with Headquarters and Headquarters Battery, 122d Field Artillery and consolidated unit reorganized and Federally recognized at Chicago as the 122d Field Artillery Battalion
Campaign Participation Credit
World War I: St. Mihiel; Meuse-Argonne; Lorraine 1918
World War II: Normandy; Northern France; Rhineland; Ardennes-Alsace; Central Europe; New Guinea; Luzon
