Great read, I was impressed by these two paragraphs in the article
His past revisited him once, at a scientific conference in Paris. In passing, he locked eyes with another scientist, a man he had interrogated in a cramped cell years ago.
"He looked at me, and I heard him say to someone in German: 'That was my prison warden,' " Mandel said. The two men shook hands. The exchange was respectful and friendly, he said.
The article leads me to beleive that the prisoners were not tortured and the information was coaxed out of them.
It was a wonderful read and a part of American history which needs to be told and recorded. KUDOS to the National Park Service and Park Rangers.