Without Enigma: The ULTRA & Fellgiebel Riddles - Tapa dura

For the last 20 years books on the Allied effort in World War II have placed great emphasis on the fact that the Allies had broken the German "Enigma" codes and often had advance warning of German activities. For some years, knowledgeable researchers have felt that a counter-argument needed to be made, that perhaps undue emphasis had been placed on Allied code-breaking successes.

Kenneth Macksey here makes just such a counter-argument. A fresh study of the evidence leads Macksey to argue that anti-Hitler generals knew that Enigma had been broken and were playing a sophisticated double game to bring down the Nazi regime. Particular attention is given to the activities of General Erich Fellgiebel, head of German Army Signals, who was executed in the wake of the Hitler assassination plot. This book will be essential reading for all those interested in World War II intelligence and the German anti-Hitler opposition.