3rd Battalion 10th Marines (3/10) was an artillery battalion that consisted of four cannon firing batteries and a headquarters battery. The battalion was stationed at Marine Corps Base Camp Lejeune, North Carolina and its primary weapon system was the M777-A2 howitzer with a maximum effective range of 30 km and the M-252 Expeditionary Fire Support System (EFSS). 3/10 fell under the 10th Marine Regiment and the 2nd Marine Division. The battalion deactivated at Camp Lejeune on 26 April 2013. Mission Provide direct support of the 2nd Marine Division 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 (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. Assigned Units when Deactivated Headquarters Battery Battery I Battery K Battery L Battery F 2/12 History World War II The battalion was activated on 14 June 1943 at Pahautanui, New Zealand north of Wellington, as the 5th Battalion, 10th Marines and assigned to the 2nd Marine Division, Fleet Marine Force. The 5/10 participated in the following World War II Campaigns: Tarawa Saipan Tinian Okinawa The battalion was redesignated March 1, 1944, as the 3rd Battalion, 10th Marines (3/10). 3/10 participated in the occupation of Japan from September 1945 to June 1946. They relocated during July 1946 to Camp Lejeune, North Carolina, and were deactivated on November 18, 1947. The Cold War & the 1990s Reactivated October 17, 1949, at Camp Lejeune, North Carolina, and assigned to the 2nd Marine Division, Fleet Marine Force. The battalion participated in the Lebanon Operation, July–October 1958 and the Cuban Missile Crisis, October–December 1962. Elements of the battalion participated as part of the Multinational Peace-Keeping Force in Lebanon, August 1982 - February 1984 Parts of the battalion took part in the invasion of Grenada in October 1983. Lima and India Battery participated in Operation Sharp Edge, Liberia, in August 1990 Hotel and India Battery also participated in Operation Desert Shield and Operation Desert Storm in Southwest Asia, December 1990 - April 1991. This was followed by Hotel Battery participating in Operation Provide Comfort in Northern Iraq in April 1991. Elements of the battalion also participated in Operation