 The 1st Engineer Battalion(-), composed of HHC, FSC, 111th Sapper Company, and 72nd Mobility Augmentation Company, conducted engineer operations in United States Division - North (USD-N) in support of Operation Iraqi Freedom.The 573rd Clearance Company out of White Sands Missile Range, NM was modularly deployed and assigned to the 1st Engineer Battalion(-) to round out the battalion's clearance capabilities.The battalion conducted route clearance along assigned division routes while concurrently partnering with the 4th and 12th Iraqi Army Field Engineer Regiments in a modified advise and assist role in order to help these FERs become mission capable.