Constituted 31 December 1861 in the Regular Army at Washington, D.C., from new and existing companies of engineers as a provisional engineer battalion (constituted 28 July 1866 as the Battalion of Engineers)

        Expanded 14 March-7 June 1901 to form the 1st and 2d Battalions of Engineers (2d Battalion of Engineers--hereafter separate lineage)

        1st Battalion of Engineers expanded, reorganized, and redesignated 1 July 1916 as the 1st Regiment of Engineers

        1st Regiment of Engineers expanded 15 May 1917 to form the 1st, 6th, and 7th Regiments of Engineers (6th and 7th Regiments of Engineers--hereafter separate lineages)

        1st Regiment of Engineers redesignated 29 August 1917 as the 1st Engineers

        Assigned in September 1917 to the 1st Expeditionary Division (later redesignated as the 1st Division)

        Regiment broken up 9-21 October 1939 and its elements reorganized and redesignated as follows:

1st Battalion on 12 October 1939 as the 1st Engineer Battalion, an element of the 1st Division (later redesignated as the 1st Infantry Division)

        (2d Battalion on 9 October 1939 as the 27th Engineer Battalion; Band on
21 October 1939 as the Station Band, Fort Dupont--hereafter separate lineages;   remaining elements of the regiment disbanded 12 October 1939)

        1st Engineer Battalion redesignated 1 August 1942 as the 1st Engineer Combat Battalion

        Redesignated 5 June 1953 as the 1st Engineer Battalion

        Relieved 16 March 2006 from assignment to the 1st Infantry Division (Lettered companies concurrently inactivated; Support Company concurrently constituted and activated)

 

CAMPAIGN PARTICIPATION CREDIT

DECORATIONS

        Presidential Unit Citation (Army), Streamer embroidered GAFSA

        Presidential Unit Citation (Army), Streamer embroidered TUNISIA

        Presidential Unit Citation (Army), Streamer embroidered NORMANDY

        Valorous Unit Award, Streamer embroidered IRAQ-KUWAIT 1991

        Valorous Unit Award, Streamer embroidered AL ANBAR PROVINCE

        Valorous Unit Award, Streamer embroidered IRAQ 2006-2007

        Meritorious Unit Commendation (Army), Streamer embroidered VIETNAM 1966

        Meritorious Unit Commendation (Army), Streamer embroidered VIETNAM 1966-1967

        Meritorious Unit Commendation (Army), Streamer embroidered VIETNAM 1967-1968

        Meritorious Unit Commendation (Army), Streamer embroidered VIETNAM 1968-1969

        Meritorious Unit Commendation (Army), Streamer embroidered IRAQ 2009-2010

        Army Superior Unit Award, Streamer embroidered 1992-1993

        French Croix de Guerre with Palm, World War I, Streamer embroidered LORRAINE-PICARDY

        French Croix de Guerre with Palm, World War I, Streamer embroidered AISNE-MARNE and MEUSE-ARGONNE

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

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

        French Medaille Militaire, Fourragere

        Belgian Fourragere 1940

                Cited in the Order of the Day of the Belgian Army for action at Mons

                Cited in the Order of the Day of the Belgian Army for action at Eupen-Malmedy

        Republic of Vietnam Cross of Gallantry with Palm, Streamer embroidered VIETNAM 1965-1968

        Republic of Vietnam Civil Action Honor Medal, First Class, Streamer embroidered VIETNAM 1965-1970

BY ORDER OF THE SECRETARY OF THE ARMY: