 In January, the battalion was relieved by a company of the 2d Battalion, 506th Infantry Regiment as part of planned operations to increase the role of Iraqi Army and Police forces in the area as a substitute for United States forces.A list of twelve of the soldiers assigned to the battalion who were killed in action during this mobilization, not including five soldiers from units who were attached to Task Force Nightstalker, is available here.Not since the Korean War had a unit from California had as many combat casualties.