Two US Marines reported dead in battle for bridges OUTSIDE BAGHDAD, April 7 (Reuters) - Two U.S. Marines were killed and many were injured on Monday in fighting to secure two bridges over a river on the edge of Baghdad, key objectives for U.S. forces advancing on the city, the U.S. military said. Marines said both bridges were badly damaged in the fighting, rendering them impassable for tanks and heavy armour. The two Marines were killed when an artillery shell landed on the turret of their amphibious assault vehicle, blasting through the tracked vehicle's armour, Master Sergeant Marvin Crawford told...