A Soldier with Company A, 1st Combined Arms Battalion, 68th Armor Regiment, 3rd Brigade Combat Team, 4th Infantry Division, Multi-National Division-Baghdad, pulls security in a building as his unit searches for improvised rocket-assisted mortars and materials in the Ur neighborhood of Baghdad July 21, 2008. Photo by US Army Sergeant Philip Klein. Iraqi and US forces are maintaining the pressure against the Mahdi Army in central and southern Iraq. Over the past 24 hours, the US military announced the capture of three senior Special Groups operatives and uncovered a major cache in Baghdad. Iraqi troops detained 68 Mahdi Army...