WASHINGTON, April 8, 2008 – American troops fighting in Iraq understand the importance of their mission there despite strains caused by repeated deployments, the senior U.S. military officer in Iraq told Senate Foreign Relations Committee members today. “There is no question that these multiple tours have put enormous strain on the force, absolutely,” Army Gen. David H. Petraeus, commander of Multinational Force Iraq, told committee members. Yet, current statistics indicate high re-enlistment rates among troops that have served multiple tours of duty in Iraq, Petraeus said. Thanks to lessons learned, the training of American troops and education of military...