Mission

Provide direct support of the 3rd Marine Regiment in time of conflict. That support may come in the traditional fashion of artillery support to maneuver forces, or by providing batteries to serve as provisional rifle companies. They also have the secondary mission of being the primary providers of

civil-military operations Civil-military operations or CMO are activities of a military force to minimize civil interference on and maximize civil support for military operations. CMO is conducted in conjunction with combat operations during wartime and becomes a centr ...

(CMO). CMO is defined as the activities of the commander that establish, maintain, influence, or exploit relations between military organizations, Government and civilian organizations and the civilian populace.

Units

* Headquarters Battery * Battery A (Alpha Battery) * Battery B (Bravo Battery) * Battery C (Charlie Battery) * Battery K ( Kilo Battery)

History

World War II

1st Battalion, 12th Marines came into existence during

World War II World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...

. The battalion was activated 1 September 1942, at

San Diego San Diego ( , ) is a city on the Pacific coast of Southern California, adjacent to the Mexico–United States border. With a population of over 1.4 million, it is the List of United States cities by population, eighth-most populous city in t ...

, California as the 4th Battalion, 12th Marines and assigned to the

3rd Marine Division The 3rd Marine Division is a division (military), division of the United States Marine Corps based at Camp Courtney, Marine Corps Base Camp Smedley D. Butler in Okinawa Prefecture, Okinawa, Japan. It is one of three active duty infantry division ...

. During October 1942, the battalion relocated to Camp Dunlap, California. They were deployed to

Auckland Auckland ( ; ) is a large metropolitan city in the North Island of New Zealand. It has an urban population of about It is located in the greater Auckland Region, the area governed by Auckland Council, which includes outlying rural areas and ...

, New Zealand during March 1943, then redeployed during July 1943 to

Guadalcanal Guadalcanal (; indigenous name: ''Isatabu'') is the principal island in Guadalcanal Province of Solomon Islands, located in the southwestern Pacific Ocean, northeast of Australia. It is the largest island in the Solomons by area and the second- ...

. During this period, the battalion was heavily involved in numerous campaigns including the Battle of Bougainville, Battle of Guam and the

Battle of Iwo Jima The 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 (IJA) during World War II. The American invasion, desi ...

. After being re-designated on 5 April 1945 as 1st Battalion, 12th Marines, the battalion was relocated during December 1945 to

Camp Pendleton Marine Corps Base Camp Pendleton is the major West Coast base of the United States Marine Corps and is one of the largest Marine Corps bases in the United States. It is on the Southern California coast in San Diego County and is bordered by ...

California California () is a U.S. state, state in the Western United States that lies on the West Coast of the United States, Pacific Coast. It borders Oregon to the north, Nevada and Arizona to the east, and shares Mexico–United States border, an ...

and as deactivated on 8 January 1946.

1950s through the 1980s

Five years later, the battalion was reactivated on 20 June 1951 at Camp Pendleton, California and was assigned to the 3rd Marine Division. In August 1953, 1st Battalion, 12th Marines deployed to Camp Mcnair, Japan and redeployed to South Camp Fuji, Japan during March 1956. During March and April 1965, the battalion was called upon to deploy to the

Republic of Vietnam South Vietnam, officially the Republic of Vietnam (RVN; , VNCH), was a country in Southeast Asia that existed from 1955 to 1975. It first garnered international recognition in 1949 as the State of Vietnam within the French Union, with it ...

. They participated in the

Vietnam War The Vietnam War (1 November 1955 – 30 April 1975) was an armed conflict in Vietnam, Laos, and Cambodia fought between North Vietnam (Democratic Republic of Vietnam) and South Vietnam (Republic of Vietnam) and their allies. North Vietnam w ...

from April 1965 to September 1969, operating from Phu Bai,

Danang Da Nang or DanangSee also Danang Dragons (, ) is the list of cities in Vietnam, fifth-largest city in Vietnam by municipal population. It lies on the coast of the Western Pacific Ocean of Vietnam at the mouth of the Hàn River (Vietnam), Hàn R ...

, Cam Lộ, Khe Sanh and Camp Carroll. The battalion after the Vietnam war was reduced to cadre status. During October 1969, the battalion was re-established at Camp Pendleton, California and assigned to the 5th Marine Division. One year later, in November 1969, they were reassigned to the 5th Marine Expeditionary Brigade. In April 1971, the 1/12 was reassigned to the

1st Marine Division The 1st Marine Division (1st MARDIV) is a Marine (military), Marine Division (military), division of the United States Marine Corps headquartered at Marine Corps Base Camp Pendleton, California. It is the ground combat element of the I Marine E ...

. The battalion deployed in June 1971 to Kaneohe Bay,

Hawaii Hawaii ( ; ) is an island U.S. state, state of the United States, in the Pacific Ocean about southwest of the U.S. mainland. One of the two Non-contiguous United States, non-contiguous U.S. states (along with Alaska), it is the only sta ...

and was later reassigned to the 1st Marine Brigade. During the 1970s and 1980s, the unit participated in numerous training exercises to remain combat ready. 1st Marine Brigade re-designated on 30 August 1985 as the 1st Marine Amphibious Brigade. In the years that followed, 1st Marine Amphibious Brigade was re-designated as the 1st Marine Expeditionary Brigade.

1990s & the Global War on Terrorism

1st Battalion, 12th Marines participated in

Operation Desert Shield , combatant2 = , commander1 = , commander2 = , strength1 = Over 950,000 soldiers3,113 tanks1,800 aircraft2,200 artillery systems , page = https://www.govinfo.gov/content/pkg/GAOREPORTS-PEMD-96- ...

and

Operation Desert Storm Operation or Operations may refer to: Arts, entertainment and media * ''Operation'' (game), a battery-operated board game that challenges dexterity * Operation (music), a term used in musical set theory * ''Operations'' (magazine), Multi-Man ...

Southwest Asia West Asia (also called Western Asia or Southwest Asia) is the westernmost region of Asia. As defined by most academics, UN bodies and other institutions, the subregion consists of Anatolia, the Arabian Peninsula, Iran, Mesopotamia, the Armenia ...

during September 1990 to April 1991. In September 1994, the battalion was reassigned to

as part of the

III Marine Expeditionary Force III Marine Expeditionary Force (III MEF) is a formation of the Marine Air-Ground Task Force of the United States Marine Corps. It is forward-deployed and able to rapidly conduct operations across the spectrum from humanitarian assistance and ...

, Hawaii. From July 2004 through April 2005, Charlie Battery, 1st Battalion, 12th Marines, deployed in support of

Operation Iraqi Freedom The Iraq War (), also referred to as the Second Gulf War, was a prolonged conflict in Iraq lasting from 2003 to 2011. It began with the invasion by a United States-led coalition, which resulted in the overthrow of the Ba'athist governm ...

. They were attached to

1st Battalion, 3rd Marines The 3d Littoral Combat Team (formerly 1st Battalion, 3d Marines) is an infantry unit in the United States Marine Corps based out of Marine Corps Base Hawaii. Nicknamed the "Lava Dogs", the unit consists of approximately 800 Marines and sailors a ...

and deployed to

Fallujah Fallujah ( ) is a city in Al Anbar Governorate, Iraq. Situated on the Euphrates, Euphrates River, it is located roughly to the west of the capital city of Baghdad and from the neighboring city of Ramadi. The city is located in the region ...

Iraq Iraq, officially the Republic of Iraq, is a country in West Asia. It is bordered by Saudi Arabia to Iraq–Saudi Arabia border, the south, Turkey to Iraq–Turkey border, the north, Iran to Iran–Iraq border, the east, the Persian Gulf and ...

participating in

Operation Phantom Fury The Second Battle of Fallujah, initially codenamed Operation Phantom Fury, Operation al-Fajr (, ) was an American-led offensive of the Iraq War that began on 7 November 2004 and lasted about six weeks. A joint military effort of the United ...

. From March 2007 through October 2007 and September 2008 through April 2009, 1st Battalion 12th Marines conducted the provisional mission of Task Force MP operating in the Al Anbar province of Iraq. In April 2011, Charlie, Alpha and Headquarters and Service Battery of 1/12 deployed to Helmand Province, with Echo Battery of 2/12 deployed to Outpost Shrine in

Kajaki Kajaki is a village in southern Afghanistan, and is split between two townsteads, Kajaki 'Olya, and Kajaki Sofla. It is the district centre of Kajaki District in Helmand Province. North east of the village is an important hydro power station ...

, Afghanistan to replace 1st Battalion, 10th Marines as the main artillery unit in the area. Bravo Battery remained in garrison for live fire during training exercises. 2nd Battalion 12th Marines was deactivated following Operation: Desert Storm due to defense cut-backs and the relocation of 12th Marine Regiment from

Camp Foster Camp Foster (), formerly known as Camp Zukeran, is a United States Marine Corps camp located in Ginowan City with portions overlapping into Okinawa City, Chatan town and Kitanakagusuku village in the Japanese prefecture of Okinawa Island. It ...

to Camp Hansen, both in

Okinawa most commonly refers to: * Okinawa Prefecture, Japan's southernmost prefecture * Okinawa Island, the largest island of Okinawa Prefecture * Okinawa Islands, an island group including Okinawa itself * Okinawa (city), the second largest city in th ...

. 3rd Battalion maintains its headquarters at Camp Hansen and sources the

Unit Deployment Program The Unit Deployment Program (UDP) is a system for assigning deployments of the United States Marine Corps. To reduce the number of unaccompanied tours and improve unit continuity, the Commandant of the Marine Corps, (CMC) established it to provide ...

as the headquarters element for deployed artillery batteries drawn from across the Corps. 3/12's permanent firing batteries have been reassigned to other units: Battery K to

2nd Battalion 11th Marines 2nd Battalion, 11th Marines (2/11) is an artillery battalion comprising four firing batteries (Echo, Fox, Golf, and India) and a Headquarters Battery. The battalion is stationed at Marine Corps Base Camp Pendleton, California. Its primary weapon s ...

, Battery L to 3rd Battalion, 11th Marines, and Battery I to 1st Battalion, 11th Marines. The battalion was deactivated at Marine Corps Base Hawaii on 26 May 2023.

Notes

References

: ;Web
1/12's official website

U.S. Marines in Battle of Al-Khafji
{{3rdMarDiv Artillery battalions of the United States Marine Corps