Leo Marks

Between Silk and Cyanide: A Codemaker's War, 1941-1945 (2000)

This is a fantastic book. It is gripping, educational, and funny, and comes highly recommended. At the age of 22, Leo Marks joined the Special Operations Executive, which managed resistance, espionage, and sabotage operations in Occupied Europe. His path to becoming an SOE cryptographer was not p...