Heroism takes many forms in war. It may emerge amid an epic battle, or the drama may focus on a single life struggling to keep alive in a shell hole. In any case, there are choices to be made and consequences to be considered on an instant’s notice. Whichever the case, no such personal decision, however small, is inconsequential when a life hangs at the balance... in the contents of a canteen. Born on Aug. 5, 1895, William Sawelson was a Jewish …