18th Marine Regiment (United States)

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18th Marine Regiment
18th Marine Regiment Insignia.jpg
18th Marine Regiment insignia[1]
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.[2]

Subordinate units

The regiment was a composite of three different types of battalions[3] and a headquarters and service company:

  • 1st Battalion, 18th Marines, A, B, & C Companies 2nd Engineer Battalion now 2nd Combat Engineer Battalion
  • 2nd Battalion, 18th Marines D, E, & F Companies 2nd Pioneer Battalion
  • 3rd Battalion, 18th Marines, G, H, & I Companies 18th Naval Construction Battalion (now Naval Mobile Construction Battalion 18 or NMCB 18)[4]


World War II

18th Marines was activated on 8 September 1942 and participated in actions at Tarawa, Saipan and Tinian. It was inactivated on 16 August 1944.[4]


  • Colonel Elmer E. Hall: 8 September 1942
  • Colonel Ewart S. Laue: 31 August - 3 October 1943; 24–29 February 1944; 7–9 April 1944; 22–24 April 1944
  • Colonel Cyril W. Martyr: 4 October 1943 - 23 February 1944; 1 March - 6 April 1944; 25 June - 15 August 1944
  • LtCol Russell Lloyd: 10-14, 19-21, 25–30 April 1944; 1–11 May 1944; 1–24 June 1944[4]

Unit awards

United States Navy Presidential Unit Citation ribbon.svg  Presidential Unit Citation with blue enamel star : – Tarawa

See also


  1. ^ 18th Naval Construction Battalion history, Seabee Museun, Port Hueneme, CA 93043. p.70[1]
  2. ^ U.S. Marine Corps World War II Order of Battle Fleet Marine Force Ground Units, Rottman p. 220 [2]
  3. ^ Battle Orders - US Marine Corps Pacific Theater of Operations 1943-44, Gordon L Rottman, Osprey Publishing, p. 13 [3]
  4. ^ a b c Rottman, Gordon L. (2002). US Marine Corps World War II order of battle : ground and air units in the Pacific War, 1939-1945, p. 218 (1 ed.). Westport, Connecticut: Greenwood Press. pp. 218–220. ISBN 9780313319068. 


  • Rottman, Gordon L. (2002). U.S. Marine Corps World War II Order of Battle - Ground and Air Units in the Pacific War, 1939 - 1945.’’. Greenwood Press. ISBN 0-313-31906-5. 
  • http://www.tarawaontheweb.org/leather.htm
  • http://www.ibiblio.net/hyperwar/USMC/USMC-M-Saipan/USMC-M-Saipan-IV.html
  • http://www.ibiblio.org/hyperwar/USMC/USMC-M-Tinian/USMC-M-Tinian-IV.html
  • http://www.ibiblio.org/hyperwar/USMC/USMC-M-Tarawa/USMC-M-Tarawa-H.html
  • https://www.ibiblio.org/hyperwar/USMC/USMC-M-Tarawa/index.html#index
  • http://www.seabeecook.com/history/NMCB_18.htm

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