U.S. Army soldiers from the 2-82 Field Artillery, 3rd Brigade, 1st Cavalry Division, place their bags on a truck as they prepare to board buses later in the evening to fly home to Fort Hood, Texas after being one of the last American combat units to exit from Iraq on December 15, 2011 at Camp Virginia, near Kuwait City, Kuwait. Today the U.S. military formally ended its mission in Iraq after eight years of war and the overthrow of Saddam Hussein.