13th Marine Regiment (United States)

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13th Marine Regiment
13th Marine Regiment insignia
Active	July 3, 1918 – August 15, 1919, December 10, 1944 – January 12, 1946[1] June 1, 1966 – October 15, 1969[2]
Country	United States of America
Branch	United States Marine Corps
Type	Infantry (1916–19) Artillery (1943–46; 1966–69)
Part of	5th Marine Division
Garrison/HQ	Decommissioned
Engagements	World War II Battle of Iwo Jima Vietnam War Battle of Khe Sanh Battle of Kham Duc Operation Taylor Common
Commanders
Notable commanders	Major General Smedley Butler

The 13th Marine Regiment (13th Marines) was an artillery regiment of the United States Marine Corps. The regiment was activated for service three times during the 20th century when the Marine Corps expanded to meet war time requirements. Originally activated as an infantry regiment during World War I, the unit arrived in France before the war ended but did not participate in combat operations. It was reactivated for service in World War II as the artillery regiment for the 5th Marine Division. The unit saw intense combat during the Battle of Iwo Jima, participated in occupation duty in Japan and was quickly decommissioned shortly after the war. The regiment was last activated during the Vietnam War to again provide fire support for 5th Marine Division regiments supporting operations in South Vietnam. The regiment was finally deactivated on April 30, 1970, as the Marine Corps began to draw down its force structure at the conclusion of the Vietnam War.