One Day in August is O'Keefe's investigative history of the Dieppe Raid, reframing that WWII catastrophe as a covert intelligence operation. Drawing on long-hidden files, it argues the raid aimed to secure German Enigma codebooks rather than serve as a straightforward assault.

Over fifteen years of research in intelligence archives across five countries, O'Keefe reconstructs the planning and secrecy behind the operation, naming figures such as Commander Ian Fleming, Mountbatten and Churchill. The narrative explains how the raid's official cover concealed a high-stakes effort to break German communications.

Readable and meticulously sourced, the book will appeal to readers of military history, espionage and Canadian wartime studies. It places the Dieppe tragedy within the broader intelligence struggle that influenced WWII strategy.

• Extensive archival research across five countries
• Focus on Enigma and wartime intelligence
• A fresh reassessment of the Dieppe Raid's purpose

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