5th Battalion 10th Marines (5/10) was a US artillery battalion comprising three firing batteries and a headquarters battery. The battalion was stationed at Marine Corps Base Camp Lejeune, North Carolina, USA and its primary weapon system was the M777A2 howitzer, with a maximum effective range of 30 km. They fell under the command of the 10th Marine Regiment and the 2nd Marine Division. The battalion was known by its nickname of, "The Five and Dime." Mission Provide direct support to 2nd Marine Division in time of conflict. That support may come in the traditional fashion of artillery fires to maneuver forces, or by providing batteries to serve as provisional rifle companies. The battalion also has the secondary mission of providing civil affairs. The battalion has currently returned from a year deployment to Helmand Province, Afghanistan in support of Operation Enduring Freedom. The battalion served as the 2D Marine Expeditionary Brigade Headquarters Group. Current units Headquarters Battery O Battery R Battery, Make no Qualm Fear the Rhino S Battery T Battery G Battery 2/12 (Golf Battery is originally a UDP unit out of Camp Hansen, Okinawa.) I Battery 3/12 (India Battery 3/12 is originally a unit out of the 3rd Marine Division; a former battery that was part of 5/10 and was disbanded in April 2007 and was re-activated in Camp Pendleton that same year.) History Originally activated as 3rd Battalion, 10th Marines on 1 January 1941 and armed with 75mm Pack Howitzers; the battalion now known as "the Steel Rain Battalion" fired the opening artillery rounds of the first U.S. offensive of World War II on 7 August 1942 against a Japanese sniper position on Guadalcanal. After earning two Presidential Unit Citations for service on Guadalcanal and Tarawa, the battalion briefly switched designations to 5th Battalion, 10th Marines. Six weeks later, the battalion transitioned to 155mm howitzers and was renamed the 2D 155mm Howitzer Battalion, a designation carried through the campaign for Saipan where they fired over 10,000 rounds, Guam where their displacements outpaced even the more nimble 75mm guns, and Iwo Jima where the battalion landed on D+1. The battalion was deactivated in 1945, and its guns remained silent until 1954 when it was re-activated. With the exception of the Cuban Missile Crisis in October 1962, where Marines supported the blockade that forced the Soviet Union to remove its missiles from Cuba, the Steel Rain Battalion did not see