The Battalion Headquarters with Battery I and Battery K deployed to Helmand Province Afghanistan in support of combat operations from October 2009 to May 2010. The Battalion assumed control of all artillery survey, meteorological and sensor assets as well High-Mobility Artillery Rocket System (HIMARS) Batteries (Battery R then Battery T) from 5th Battalion, 11th Marines already in theater. Battery L served with the 24th MEU during the period while Battery F remained manned, trained and ready to deploy as required. Battery F subsequently deployed to the Afghanistan Sangin Valley in support of 3/5 from December 2010 to May 2011 as part of the 26th MEU when called to support combat operations.