Global War on Terror(2001- ): Wars in Iraq and Afghanistan have involved 1.4 million military personnel.
![](http://images.csmonitor.com/csmarchives/2011/11/iraqtroops.jpg?alias=standard_900x600nc)
Khalid Mohammed/AP
U.S. Army soldiers walk past the entrance of the detention facility that once held Saddam Hussein and his cousin Ali Hassan al-Majid at the Camp Victory Complex that is set to close in Baghdad, Iraq, Monday, Nov. 7. The U.S. has promised to withdraw from Iraq by the end of the year as required by a 2008 security agreement between Washington and Baghdad. Some 39,000 U.S. troops are scheduled to clear out along with their equipment.