At the heart of the story of America's wars are our "citizen soldiers" -- those hometown heroes who fought and sacrificed from Bunker Hill at Charlestown to Pointe du Hoc in Normandy, and beyond, without expectation of recognition or recompense. Americans like to think that the service of its citizen volunteers is, and always has been, of momentous importance in our politics and society. But though this has made for good storytelling, the reality...