 On 8 September 2003, the 1st Engineer Battalion deployed to Iraq as part of the 1st Brigade, 1st Infantry Division for Operation Iraqi Freedom.In one year the battalion exploited over 370 enemy caches consisting of 28 tons of munitions and weapons, found and destroyed over 150 improvised devices, fortified 21 government buildings and coalition camps in the Al Anbar Province, cleared several hundred kilometers of roads, supported six battalions in the Ar Ramadi and Habbaniyah areas with combat engineer operations for six other camps in the Ar Ramadi area.The battalion returned to Fort Riley in October 2004.