The Secret War: Spies, Codes and Guerrillas 1939-1945

Spies, codes and guerrillas played critical roles in the Second World War, exploited by every nation in the struggle to gain secret knowledge of its foes, and to sow havoc behind the fronts. In The Secret War, Max Hastings presents a worldwide cast of characters and some extraordinary sagas of intelligence and Resistance, to create a new perspective on the greatest conflict in history.
Here are not only Alan Turing and the codebreaking geniuses of Bletchley Park, but also their German counterparts, who achieved their own triumphs against the Allies. Hastings plots the fabulous espionage networks created by the Soviet Union in Germany and Japan, Britain and America, and explores the puzzle of why Stalin so often spurned his agents, who reported from the heart of the Axis war machine.