Organized 31 December 1861 in the Regular Army at Washington, District of Columbia, 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 (1st and 7th Regiments -- hereafter separate lineages)

6th Regiment of Engineers redesignated 29 August 1917 as the 6th Engineers

Assigned 1 October 1917 to the 3d Division

Regiment broken up 12 October 1939 and its elements reorganized and redesignated as follows:

2d Battalion as the 10th Engineer Battalion, an element of the 3d Division (later redesignated as the 3d Infantry Division)
(Headquarters and Headquarters and Service Company disbanded; 1st Battalion as the 6th Engineer Battalion -- hereafter separate lineage)

10th Engineer Battalion redesignated 1 August 1942 as the 10th Engineer Combat Battalion

Redesignated 1 March 1954 as the 10th Engineer Battalion

Assigned 15 February 1996 to the 3d Infantry Division

10th Engineer Battalion Honors

Campaign Participation Credit

Civil War: Peninsula; Antietam; Fredericksburg; Chancellorsville; Wilderness; Spotsylvania; Cold Harbor; Petersburg; Appomattox; Virginia 1863

War with Spain: Santiago

World War I: Somme Defensive; Champagne-Marne; Aisne-Marne; St. Mihiel; Meuse-Argonne; Champagne 1918

World War II: Algeria-French Morocco; Tunisia; Sicily (with arrowhead); Naples-Foggia; Anzio (with arrowhead); Rome-Arno; Southern France (with arrowhead); Rhineland; Ardennes-Alsace; Central Europe

Korean War: CCF Intervention; First UN Counteroffensive; CCF Spring Offensive; UN Summer-Fall Offensive; Second Korean Winter; Korea, Summer-Fall 1952; Third Korean Winter; Korea, Summer 1953

Company C additionally entitled to:

Korean War: UN Offensive

Decorations

Presidential Unit Citation (Army) for COLMAR

Meritorious Unit Commendation (Army) for KOREA

French Croix de Guerre with Palm, World War I for CHAMPAGNE-MARNE, AISNE-MARNE

French Croix de Guerre with Palm, World War II for COLMAR

French Croix de Guerre, World War II, Fourragere

Republic of Korea Presidential Unit Citation for UIJONGBU CORRIDOR

Republic of Korea Presidential Unit Citation for IRON TRIANGLE

Chryssoun Aristion Andrias (Bravery Gold Medal of Greece) for KOREA