Scenes from Iraq during the 2007 U.S. troop surge through the withdrawal of forces from the country. (AP Photos/Maya Alleruzzo)
An Iraqi family reacts as U.S. soldiers detain their teenage relative after a rocket propelled grenade attack in Mosul on March 31, 2008.
A girl is treated by American medics after a mortar struck while she was playing outside in the town of Arab Jabour on Dec. 11, 2007.
Iraqi National Police Col. Moslet Ahmed Attiya fields phone calls about a suicide bombing during a joint search operation with U.S. troops in Mosul, March 17, 2009.
10th Mountain Division soldiers rest after searching for three of their comrades missing days after a complex attack that left four U.S. soldiers and an Iraqi soldier dead in a village south of Baghdad on May 18, 2007.
U.S soldiers rest in their makeshift barracks at Combat Outpost Rabiy in Mosul on March 18, 2008.
A U.S. soldier, assists an Iraqi soldier with two men detained in a raid by Iraqi troops in Mosul on March 22, 2008.
An Iraqi woman passes U.S. and Iraqi forces in the Bab al-Jadeed area of Mosul during a joint operation on west side of the city, then considered to be the last urban stronghold for al-Qaida in the country, on April 23, 2009.
An Iraqi man is detained by U.S. and Iraqi security forces after they rescued 50 kidnapped university students in Mosul on April 6, 2008.
A girl peers from her front gate as a U.S. soldier patrols in Mosul on June 9, 2009.
U.S. and Iraqi soldiers watch comrades detain men suspected of planting a roadside bomb after polls closed for the national election in Mosul on March 7, 2010.
U.S. soldiers race toward the border from Iraq into Kuwait on Aug. 18, 2010. The soldiers were part of the last combat brigade to leave Iraq as part of the drawdown of U.S. forces.
U.S. soldiers board a C-17 aircraft at Baghdad International Airport as they begin their journey to the United States on July 13, 2010. This was the beginning of a phased withdrawal from the country.