HARRISBURG - With his draft number coming up and his anger rising over reports of Nazi Germany's human-rights abuses, Abe Plotkin says it was an easy decision to close his Scranton shoe store and enlist in the Army in 1942. "We knew they were mistreating the people," Plotkin recalled in a recent interview. "We didn't know how bad, but we knew they were mistreating them." Plotkin soon found out: After participating in some of the Army's biggest battles in France and Germany, he witnessed the aftermath of Nazi Germany's mass murders at the Ohrdruf labor camp. The experience motivated him:...