51st Infantry Regiment (United States)
| 51st Infantry Regiment | |
|---|---|
Coat of arms
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| Active | 1917– |
| Country |
 United States
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| Branch |
 United States Army
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| Type | Infantry |
| Motto(s) | "I Serve" |
| Branch color | Light Blue |
| Insignia | |
| Distinctive unit insignia |  |
| U.S. Infantry Regiments | |
|---|---|
| Previous | Next |
| 50th Infantry Regiment | 52nd Infantry Regiment |
The 51st Infantry Regiment is a regiment of the United States Army first established in 1917.
The regiment's crest shows a wreath of the colors (Or and Azure) a ragged tree trunk eradicated Proper. The shield is blue for Infantry, with the bend taken from the coat of arms of Alsace. The ragged tree trunk symbolizes the Meuse-Argonne operations.
The 51st Infantry Regiment was constituted 15 May 1917 at Chickamauga Park, Georgia, then assigned on 16 November 1917 to the 6th Infantry Division. It was inactivated 22 September 1921 at Camp Grant, Illinois. It was relieved on 15 August 1927 from assignment to the 6th Division and assigned to the 9th Infantry Division; relieved 1 October 1933 from assignment to the 9th Division and assigned to the 6th Division; then relieved 16 December 1940 from assignment to the 6th Division.
The regiment was reactivated 15 April 1941 at Pine Camp, New York, as the 51st Infantry (Armored), an element of the 4th Armored Division, then redesignated 1 January 1942 as the 51st Armored Infantry.
Following World War II, Company F of the regiment was reorganized and redesignated on 1 May 1946 as Company C, 10th Constabulary Squadron, an element of the 14th Constabulary Regiment, United States Constabulary in Germany. It was inactivated 20 December 1948 in Germany; concurrently converted and redesignated as Company C, 10th Armored Infantry Battalion, an element of the 4th Armored Division, then redesignated 25 February 1953 as Company C, 510th Armored Infantry Battalion, an element of the 4th Armored Division. The company was activated on 15 June 1954 at Fort Hood, Texas and inactivated there on 1 April 1957, Texas. Concurrently, the 510th Armored Infantry Battalion was relieved from assignment to the 4th Armored Division with the reorganization of Army combat forces into the Pentomic concept.
The lineage of Company F was redesignated on 1 July 1959 as Headquarters and Headquarters Company, 6th Battle Group, 51st Infantry but remained inactive. It was redesignated again on 11 August 1967, this time as Company F, 51st Infantry and activated on 25 September 1967 in Vietnam with the reflagging of the 196th Long Range Reconnaissance Patrol Detachment, Americal Division, The lineage of F-51st was inactivated on 26 December 1968 in Vietnam when the unit was reflagged as Company G, 75th Infantry (separate lineage and honors).
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