U.S. Army soldiers use a wall and a pillar as a shield.
U.S. Army soldiers use a wall and a pillar as a shield while they tactically enter and clear a building in Fallujah, Iraq, during Operation al Fajr (New Dawn) on Nov. 9, 2004. The soldiers are assigned to 2nd Battalion, 5th Cavalry Regiment, 2nd Brigade Combat Team, 1st Cavalry Division.