Unlike previous wars, most soldiers served tours of duty in Vietnam lasting just one year. The soldier who carried this calendar expressed an obsession with time “in country” that many of his comrades shared. Soldiers considered themselves “short” when they had fewer than 100 days left. Bobby McMaster was thinking either of his wife or of the woman he would marry when, and if, he returned home. What might his inscription of the Bible verse on the right side of the calendar suggest about his feelings about the woman he left behind? © Bettmann/Corbis.