The 21st Marine Regiment (21st Marines) was an infantry regiment of the United States Marine Corps. Commissioned for service during World War II, the regiment fought in the battles of Bougainville, Guam and

Iwo Jima Iwo Jima (, also ), known in Japan as , is one of the Japanese Volcano Islands and lies south of the Bonin Islands. Together with other islands, they form the Ogasawara Archipelago. The highest point of Iwo Jima is Mount Suribachi at high. ...

. It fell under the command of the

3rd Marine Division The 3rd Marine Division is a division of the United States Marine Corps based at Camp Courtney, Marine Corps Base Camp Smedley D. Butler in Okinawa, Japan. It is one of three active duty infantry divisions in the Marine Corps and together with th ...

and was decommissioned at the end of the war on December 20, 1945.

Subordinate units

The regiment was composed of three infantry battalions and one headquarters company:

History

The 21st Marine Regiment was activated on July 14, 1942, at Camp Elliot, San Diego, California, but was actually organized at New River, North Carolina. Many of the first members of the regiment came from the

6th Marine Regiment The 6th Marine Regiment (also referred to as "6th Marines") is an infantry regiment of the United States Marine Corps based at Marine Corps Base Camp Lejeune, North Carolina. The regiment falls under the command of the 2nd Marine Division (Unite ...

. They were assigned to the 3rd Marine Division, however from January to June 1943 they were an independent regiment. During the war, the regiment took part in the Battle of Bougainville, Battle of Guam (Fig. 1) and the

Battle of Iwo Jima The Battle of Iwo Jima (19 February – 26 March 1945) was a major battle in which the United States Marine Corps (USMC) and United States Navy (USN) landed on and eventually captured the island of Iwo Jima from the Imperial Japanese Army (IJ ...

. Following the Japanese surrender, 21st Marines moved to Guam where they were inactivated on December 20, 1945.

Iwo Jima

On Iwo the 21st RCT relieved the decimated 23rd on D-plus3 That placed the 21st in the 4th Marines ZofA assigned to yellow beach 2.(Fig. 2) The front lines were in the vicinities of Motoyama Airfields #1 and #2. On D-plus6 the Regiment reverted to the 3rd Marine Divisions control and was passed through by the 9th Marines.

Unit awards

Navy Unit Commendation The Navy Unit Commendation (NUC) is a United States Navy unit award that was established by order of the Secretary of the Navy James Forrestal on 18 December 1944. History Navy and U.S. Marine Corps commands may recommend any Navy or Marine Co ...

, 21st Marine Regiment(and all units attached to or serving with)USMC Historical Monograph Guam, USMC History Division, Headquarters Quantico, V

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Notable former members

Lowell E. English Lowell Edward English (July 8, 1915 – September 29, 2005) was a highly decorated officer in the United States Marine Corps with the rank of major general who served in World War II, Korea and Vietnam. He is most noted for his service a ...

- Major General *

Hershel W. Williams Hershel Woodrow "Woody" Williams (October 2, 1923 – June 29, 2022) was a United States Marine Corps Reserve warrant officer and United States Department of Veterans Affairs veterans service representative who received the Medal of Honor, ...

- Medal of Honor recipient

References