During WWII the Germans had about 1,000 prisoner of war camps, holding 170,000 British military alone. The number of stories that could be told is enormous.
Anyone seeking to understand the last years of the Cold War should read this book. The central figure is Oleg Gordievsky, now in his eighties and living in a (hopefully) safe house near London.
“No book on the colorful SAS could be as much fun to read.”