The soldiers didn’t need directions. They followed the bodies. In late April 1945, as troops from the 358th Infantry Regiment of the U.S. Army’s 90th Division pushed into the wooded hills of far eastern Bavaria, they came upon a grim trail leading away from a place few Americans had heard of then or since: Flossenbürg, a Nazi concentration camp near the Czech border. What they found would stay with them for the rest of their lives.