One of the most lauded historians of our time returns to the Second World War in this magnificent retelling of the awe-inspiring raid on German dams conducted by the Royal Army Force’s 617 Squadron. Max Hastings takes us back to the May 1943 raid to reveal how the truth of that night is considerably different from the popularized account most people know. The RAF had identified the Ruhr dams as strategic objectives as far back as 1938; in those five years Wing Commander Guy Gibson formed and trained the 617 Squadron. Hastings observes that while the dropping of Wallis’s mines provided the dramatic climax, only two of the eight aircraft lost came down over the dams—the rest were shot down on the flight to, or back from, the mission. And while the 617 Squadron’s valor is indisputable, the ultimate industrial damage caused by the dam raid was actually rather modest.