18th Marine Regiment (United States)

18th Marine Regiment
Active	18 September 1942 - 16 August 1944
Country	United States
Allegiance	United States
Branch	United States Marine Corps
Type	Engineer Regiment
Part of	2nd Marine Division
Engagements	World War II * Battle of Tarawa * Battle of Tinian * Battle of Saipan

The 18th Marine Regiment was a composite engineer regiment of the United States Marine Corps subordinate to the 2nd Marine Division. It was disbanded during the war, with the 1st and 2nd battalions remaining in the Division.

The regiment was a composite of three different types of battalions and a headquarters and service company:

18th Marines was activated on 8 September 1942 and participated in actions at Tarawa, Saipan and Tinian. It was deactivated on 16 August 1944.