In this new book, Janusz Piekalkiewicz chronicles the British Secret Inteligence Service (SIS) and the "Ultra" secret, and its effect on the campaign in North Africa during the Secon World War. On the German side, Rommel also knew the use of intercepted enemy messages - an awareness that the British were able to gain only much too late and after many sacrifices. The decoding of Rommel's radio messages, which were coded using the "Enigma" cipher machine,...