HASWAH, Iraq -- His flak jacket was covered in dried blood, his blood. Look at the stains, Marine Lance Cpl. June N. Ramos said, pointing. There were dark red smears all over the front of his camouflage vest. Ramos reached into the pocket of the flak jacket and pulled out a small silver tin wrapped in a plastic bag. He opened the container, which held a half-dozen Communion wafers. "Instead of putting a grenade in here," Ramos said, fastening the pocket of his vest, "I put the body of Christ." They call him the "warrior monk." Ramos, 32, was studying...