“A very readable account of the protracted and ultimately unsuccessful efforts of the Song, Xia, and Jin dynasties to defend China from the Mongols.”—Strategy Page  Defending Heaven brings together, for the first time in one volume, the complete histories of the wars the Jin, Song, Xia, and Ming dynasties fought against the Mongols. Lasting nearly two centuries, these wars, fought to defend Chinese civilization against a brutal and unrelenting foe, pitted personal heroics against the inexorable Mongol war machine and involved every part of the Chinese state.   The resistance of the Chinese dynasties to the Khans is a complex and rich story of shifting alliances and political scheming, vast armies and navies, bloody battles and an astonishing technological revolution. The great events of China’s Mongol war are described and analyzed, detailing their immediate and later implications for Chinese history.   In this excellent new book, James Waterson tackles this fascinating subject with characteristic verve and skill. Setting the Mongol war in the wider context of China’s ancient and almost perpetual conflict with the northern nomads, it sheds light on the evolution of China’s military society and the management, command, and control of the army by the Chinese state.   “An excellent contribution not only to the study of the Mongol Empire but also to military history . . . Anyone interested in medieval warfare will find Defending Heaven of interest.”—Professor Timothy May, in De Re Militari