At the end of World War II, the Cabinet Office commissioned an eminent academic, Professor William Mackenzie, to undertake a comprehensive secret history of Secial Operations Executive. Given access to both personnel and the surviving wartime files, Machenzie's report was a reference document to be used by intelligence agencies in a future conflict, its audience the very elite of Whitehall insiders.Now, for the first time, this highly classified account has been made available. Never before have SOE's operation across the world been descibed in such detail and with total authority. Mackenzie's document explores numerous controversies and reveals dozens of previously undisclosed episodes from Britain's secret war against the Axis.