Constituted 3 May 1861 in the Regular Army as Company A, 1st Battalion, 12th Infantry.
Organized
20 October 1861 at Fort Hamilton, New York.
Reorganized and re designated 7 December 1866 as Company A, 12th Infantry.
12th Infantry assigned 17 December 1917 to the 8th Division.
Relieved
15 August 1927 from assignment to the 8th Division and assigned
to the 4th Division.
Relieved 1
October 1933 from assignment to the 4th Division and assigned
to the 8th Division.
Relieved
10 October 1942 from assignment to the 8th Division and
assigned to the 4th Division (later re designated as the 4th Infantry Division).
Inactivated 15 July 1947 at Fort Ord, California.
Reorganized
and re designated 1 April 1957 as Headquarters and Headquarters Company, 1st BattleGroup, 12th Infantry and remained assigned to the 4th Infantry Division. (Organic elements concurrently
constituted and activated).
Reorganized
and re designated 1 October 1963 as the 1st Battalion.
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Belgian
Fourragere 1940 (12th Infantry cited; DA GO 43, 1950)
Cited in
the Order of the Day of the Belgian Army for action in BELGIUM (12th Infantry cited; DA GO 43, 1950)
Cited in
the Order of the Day of the Belgian Army for action in the ARDENNES (12th Infantry cited; DA GO 43, 1950)
Vietnamese
Cross of Gallantry with Palm, Streamer embroidered
VIETNAM 1966-1969 (1st Battalion, 12th Infantry cited; DA GO
53,
1970)Click to see General Order 53 (viewed as PDF)
Vietnamese
Civil Action Honor Medal, First Class, Streamer embroidered
VIETNAM 1966-1969 (1st Battalion, 12th Infantry cited; DA GO
53, 1970)Click to see General Order
53 (viewed as PDF)
Company B
and Company C each additionally entitled to: Valorous Unit Award, Streamer
embroidered KONTUM (Company B and Company C, 1st Battalion,
12th Infantry cited; DA GO 43, 1970)