First Lieutenant Jimmy Cross carried letters from a girl named Martha, a junior at Mount Sebastian College in New Jersey. They were not love letters, but Lieutenant Cross was hoping, so he kept them folded in plastic at the bottom of his rusack. In the late afternoon, after a day's march, he would dig his foxhole, wash his hands under a canteen, unwrap the letters, hold them with the tips of his fingers, and spend the last hour of light pretending.