12th Marine Regiment

A 75 mm pack howitzer of the 12th Marines, in a semi-fortified firing position on Bougainville late in 1943.

The regiment was reactivated September 1, 1942, at San Diego, California, as the 12th Marines and assigned to the 3rd Marine Division. It relocated during October 1942 to Camp Dunlap, California. From there it deployed during March 1943 to Auckland, New Zealand. In July 1943 it moved to Guadalcanal.

The regiment participated in the following World War II campaigns:

• Bougainville campaign (1944–45)
• Northern Solomons
• Battle of Guam
• Battle of Iwo Jima

Following the war, the 12th Marines relocated in December 1945 to Marine Corps Base Camp Pendleton, California.

Reactivated March 17, 1952, at Camp Pendleton, California, and assigned to the 3rd Marine Division. Deployed during August 1953 to Camp McNair, Japan. Redeployed during February 1956 to Okinawa. Redeployed from March–July 1965 to the Republic of Vietnam (South Vietnam).

Participated in the War in Vietnam, May 1965 – November 1969, operating from:

• Da Nang
• Phu Bai
• Chu Lai
• Huế
• Đông Hà

Redeployed from August–November 1969 to Camp Hansen, Okinawa.

Relocated during August 1971 to Camp Hauge, Okinawa. Elements participated in the Southeast Asia Evacuations, April–June 1975. Elements participated in the recovery of the SS Mayaguez in May 1975. Relocated during August 1976 to Camp Zukeran, Okinawa. Camp Zukeran renamed Camp Foster during March 1980.

Elements participated in the Operation Desert Shield and Operation Desert Storm, Southwest Asia, September 1990-April 1991. Relocated during July 1998 to Camp Hansen, Okinawa.

Operation Enduring Freedom is an ongoing war in Afghanistan entering its twelfth year. Marines from the battalion took part in the Helmand Province Campaign, particularly the Battle of Sangin.