There were about half a dozen prisoner of war camps in Tennessee during World War II — the best known of which was Camp Crossville, in Cumberland County. We know a lot more about Camp Crossville than the others because of Gerhard Hennes. Hennes was a German officer captured in North Africa in May 1943. Five months later, he entered the gates of Camp Crossville, where he was interred for two years. After World War II, Hennes would become an American citizen, and in 2004 he published The Barbed Wire: POW in the USA. In it he gives a detailed...