Iraqi soldiers take up position on a road during a patrol in Baghdad February 17, 2008. REUTERS/Mohammed Ameen  (IRAQ)
RM2D2WA07Iraqi soldiers take up position on a road during a patrol in Baghdad February 17, 2008. REUTERS/Mohammed Ameen (IRAQ)
Pfc. James Richardson steps away from his rifle awaiting the orders to take up a good firing position from the control tower at the rifle firing range at Camp Atterbury, Ind., Nov. 12. Fathers, sons, brothers and veterans, Citizen Soldiers ready for war together 130009
RMHER1WAPfc. James Richardson steps away from his rifle awaiting the orders to take up a good firing position from the control tower at the rifle firing range at Camp Atterbury, Ind., Nov. 12. Fathers, sons, brothers and veterans, Citizen Soldiers ready for war together 130009
Iraqi soldiers take up position during a military operation in Baghdad's al-Fadhil district March 30, 2009. Iraqi security forces swept through an area of Baghdad on Sunday and detained several people after Sunni patrolmen angry at their leader's arrest clashed with police and troops in a battle that killed three people. REUTERS/Saad Shalash (IRAQ CONFLICT POLITICS)
RM2D207N8Iraqi soldiers take up position during a military operation in Baghdad's al-Fadhil district March 30, 2009. Iraqi security forces swept through an area of Baghdad on Sunday and detained several people after Sunni patrolmen angry at their leader's arrest clashed with police and troops in a battle that killed three people. REUTERS/Saad Shalash (IRAQ CONFLICT POLITICS)
Iraqi soldiers take up position during a joint military operation with U.S. forces in a village in Mahmoudiya, 30km (20 miles) south of Baghdad April 16, 2008. About five suspected insurgents were arrested and weapons cache found during a raid conducted by U.S. and Iraqi forces in a village in Mahmoudiya, Iraqi army said.        REUTERS/Ibrahim Sultan (IRAQ)
RM2E7RRG7Iraqi soldiers take up position during a joint military operation with U.S. forces in a village in Mahmoudiya, 30km (20 miles) south of Baghdad April 16, 2008. About five suspected insurgents were arrested and weapons cache found during a raid conducted by U.S. and Iraqi forces in a village in Mahmoudiya, Iraqi army said. REUTERS/Ibrahim Sultan (IRAQ)
Iraqi soldiers take up position during a joint search operation with U.S. army in the town of Jalawla of Diyala province, 115 km (70 miles) northeast of Baghdad, May 16, 2009. Along a fuzzy seam dividing central Iraq from the largely autonomous enclave of Kurdistan, a row is bubbling over which authority owns this patchwork of Kurd and Arab neighbourhoods, river-fed palm groves and multi-billion-barrel oil fields. Picture taken May 16, 2009.  To match feature IRAQ/KURDS-ARABS    REUTERS/Saad Shalash (IRAQ CONFLICT MILITARY)
RM2D30MX9Iraqi soldiers take up position during a joint search operation with U.S. army in the town of Jalawla of Diyala province, 115 km (70 miles) northeast of Baghdad, May 16, 2009. Along a fuzzy seam dividing central Iraq from the largely autonomous enclave of Kurdistan, a row is bubbling over which authority owns this patchwork of Kurd and Arab neighbourhoods, river-fed palm groves and multi-billion-barrel oil fields. Picture taken May 16, 2009. To match feature IRAQ/KURDS-ARABS REUTERS/Saad Shalash (IRAQ CONFLICT MILITARY)
Iraqi soldiers take up position on the outskirts of Mahmoudiya, 30km (20 miles) south of Baghdad, May 16, 2007 as they continue the search for three missing U.S. soldiers. U.S. forces searching for the three soldiers said on Tuesday suspected al Qaeda militants holding the men were trapped in an area of farmland near Baghdad. The soldiers, part of a larger unit sent to intercept roadside bombs in a Sunni Arab militant stronghold, went missing after a coordinated ambush on Saturday in which four other U.S. soldiers and an Iraqi army translator were killed.    REUTERS/Ibrahim Sultan (IRAQ)
RM2D1J5WXIraqi soldiers take up position on the outskirts of Mahmoudiya, 30km (20 miles) south of Baghdad, May 16, 2007 as they continue the search for three missing U.S. soldiers. U.S. forces searching for the three soldiers said on Tuesday suspected al Qaeda militants holding the men were trapped in an area of farmland near Baghdad. The soldiers, part of a larger unit sent to intercept roadside bombs in a Sunni Arab militant stronghold, went missing after a coordinated ambush on Saturday in which four other U.S. soldiers and an Iraqi army translator were killed. REUTERS/Ibrahim Sultan (IRAQ)
U.S. soldiers take up position near a vehicle during a joint patrol with Iraqi security forces in Jasr Diyala on the outskirts of southern Baghdad December 4, 2007.   REUTERS/Erik de Castro       (IRAQ)
RM2D2G54FU.S. soldiers take up position near a vehicle during a joint patrol with Iraqi security forces in Jasr Diyala on the outskirts of southern Baghdad December 4, 2007. REUTERS/Erik de Castro (IRAQ)
U.S. soldiers take up position during a military drill for Iraqi soldiers conducted by U.S. forces in Latifiya, about 40 km (25 miles) south of Baghdad, April 6, 2009. REUTERS/Atef Hassan (IRAQ MILITARY POLITICS)
RM2D26XJXU.S. soldiers take up position during a military drill for Iraqi soldiers conducted by U.S. forces in Latifiya, about 40 km (25 miles) south of Baghdad, April 6, 2009. REUTERS/Atef Hassan (IRAQ MILITARY POLITICS)
U.S. soldiers take up position during a joint  search operation with Iraqi security forces in Saadia area near Baquba, 115 km (70 miles) northeast of Baghdad May 19, 2009.   REUTERS/Saad Shalash (IRAQ MILITARY POLITICS)
RM2E78E27U.S. soldiers take up position during a joint search operation with Iraqi security forces in Saadia area near Baquba, 115 km (70 miles) northeast of Baghdad May 19, 2009. REUTERS/Saad Shalash (IRAQ MILITARY POLITICS)
Iraqi soldiers and tanks take up position on a bridge in Amara, 300 km (185 miles) southeast of Baghdad, June 15, 2008. Iraq's government beefed up army and police units in the southern city of Amara on Sunday for a new crackdown on Shi'ite militias, witnesses said.       REUTERS/Atef Hassan (IRAQ)
RM2D1HWAJIraqi soldiers and tanks take up position on a bridge in Amara, 300 km (185 miles) southeast of Baghdad, June 15, 2008. Iraq's government beefed up army and police units in the southern city of Amara on Sunday for a new crackdown on Shi'ite militias, witnesses said. REUTERS/Atef Hassan (IRAQ)
U.S. Army soldiers from Aztec Company, 2-23 Infantry, prepare to take up a rooftop position during a patrol in Muqdadiya December 8, 2007.  REUTERS/Bob Strong (IRAQ)
RM2D1KWWFU.S. Army soldiers from Aztec Company, 2-23 Infantry, prepare to take up a rooftop position during a patrol in Muqdadiya December 8, 2007. REUTERS/Bob Strong (IRAQ)
U.S. soldiers of Alpha company, 2nd Battalion, 17th Field Artillery Regiment, take up position during a patrol in Zafraniya neighbourhood, southeast of Baghdad September 6, 2007. REUTERS/Carlos Barria  (IRAQ)
RM2D2TRA8U.S. soldiers of Alpha company, 2nd Battalion, 17th Field Artillery Regiment, take up position during a patrol in Zafraniya neighbourhood, southeast of Baghdad September 6, 2007. REUTERS/Carlos Barria (IRAQ)