Relieved 5 July 1946 from assignment to the 33d Infantry Division and assigned to the 44th Infantry Division (United States) Ordered into active federal service 15 February 1952 at home stations; released 10 October 1954 from active federal service and reverted to state control; concurrently relieved from assignment to the 44th Infantry Division Withdrawn 5 February 1987 from the Combat Arms Regimental System and reorganized under the United States Army Regimental System with headquarters at Urbana Ordered into active federal service 5 January 2005 at home stations; released from active federal service 1 September 2006 and reverted to state control; concurrently, relieved from assignment to the 35th Infantry Division and assigned to the 33d Infantry Brigade Combat Team A Gold color metal and enamel device 1+1⁄8 inches (2.9 cm) in height overall consisting of a shield blazoned: Argent, a fess Gules of the first and Vert fesswise between, in chief two arrows Or saltirewise behind a Black hawk and in base a fleur-de-lis of the second, overall a saltire Azure.

Service in the Black Hawk War is symbolized by the Black Hawk and the two red arrows, service in the Mexican War by the horizontal belt across the shield of red, white and green, the colors of the Mexican flag.

Argent, a fess Gules of the first and Vert fesswise between, in chief two arrows of the second saltirewise behind a Black hawk Proper and in base a fleur-de-lis of the second, overall a saltire Azure.

That for the regiments and separate battalions of the Illinois Army National Guard: On a wreath Argent and Azure, upon a grassy field the blockhouse of old Fort Dearborn Proper.

Service in the Black Hawk War is symbolized by the Black Hawk and the two red arrows, service in the Mexican War by the horizontal belt across the shield of red, white and green, the colors of the Mexican flag.