Lineage and Honors Information as of 3 October 2011
20th ENGINEER BATTALION
Constituted 7 December 1917 in the National Army as the 42d Engineer Battalion
Organized 7 February 1918 at Washington, D.C.
Battalion broken up 18 October 1918 and its elements reorganized and redesignated as follows:
Headquarters disbanded
Companies A, B, C, and D as the 42d, 43d, 44th, and 45th Companies, 20th Engineers, respectively
42d, 43d, 44th, and 45th Companies, 20th Engineers, demobilized in June and July 1919 at Camp Merritt, New Jersey, and Newport News, Virginia
Reconstituted 1 October 1933 in the Regular Army as the 42d Engineers
Activated 1 June 1940 at Fort Benning, Georgia
Redesignated 1 August 1942 as the 20th Engineer Combat Regiment
Regiment broken up 15 January 1944 and its elements reorganized and redesignated as follows:
1st Battalion as the 20th Engineer Combat Battalion
(Headquarters and Headquarters and Service Company as Headquarters
and Headquarters Company, 1171st Engineer Combat Group; 2d Battalion as the 1340th Engineer Combat Battalion - hereafter separate lineages)
20th Engineer Combat Battalion inactivated 30 March 1946 in Germany
Activated 18 September 1950 at Fort Bragg, North Carolina
Reorganized and redesignated 8 June 1953 as the 20th Engineer Battalion
Assigned 16 October 1992 to the 1st Cavalry Division
Relieved 16 October 2005 from assignment to the 1st Cavalry Division (lettered companies concurrently inactivated; Support Company concurrently constituted and activated)
CAMPAIGN PARTICIPATION CREDIT
World War I
Streamer without inscription
World War II
Algeria-French Morocco
Tunisia
Sicily (with arrowhead)
Normandy (with arrowhead)
Northern France
Rhineland
Ardennes-Alsace
Central Europe
Vietnam
Counteroffensive
Counteroffensive, Phase II
Counteroffensive, Phase III
Tet Counteroffensive
Counteroffensive, Phase IV
Counteroffensive, Phase V
Counteroffensive, Phase VI
Tet 69/Counteroffensive
Summer-Fall 1969
Winter-Spring 1970
Sanctuary Counteroffensive
Counteroffensive, Phase VII
Consolidation I
Southwest Asia
Defense of Saudi Arabia
Liberation and Defense of Kuwait
War on Terrorism
Campaigns to be determined
DECORATIONS
Presidential Unit Citation (Army), Streamer embroidered NORMANDY
Valorous Unit Award, Streamer embroidered BAGHDAD
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 SOUTHWEST ASIA 1990-1991
Meritorious Unit Commendation (Army), Streamer embroidered IRAQ 2006-2007
French Croix de Guerre with Silver-Gilt Star, World War II, Streamer embroidered
VIERVILLE-COLLEVILLE
Republic of Vietnam Civil Action Honor Medal, First Class, Streamer embroidered VIETNAM 1970-1971
BY ORDER OF THE SECRETARY OF THE ARMY:
ROBERT J. DALESSANDRO
Director, Center of Military History