A U.S. soldier with 1st Squadron, 9th Cavalry Regiment, 4th Advise and Assist Brigade, 1st Cavalry Division radios the opposing force instructor for the completion of the night ambush training conducted by Iraqi Army soldiers in the Guzlani Warrior Training Center in Contingency Operating Site Marez, Iraq, Jan. 6, 2011. U.S. soldiers assigned to 1st Squadron, 9th Cavalry Regiment, 4th Advise and Assist Brigade, 1st Cavalry Division utilized GWTC to train the Iraqi Army on conducting battalion size operations in support of Operation New Dawn.