The Dynamics of Military Revolution aims to bridge a major gap in the emerging literature on revolutions in military affairs, suggesting that there have been two very different phenomena at work over the past centuries: ‘military revolutions’, which are driven by vast social and political changes; and ‘revolutions in military affairs’, which military institutions have directed, although usually with great difficulty and ambiguous results. By providing both a conceptual framework and a historical context for thinking about revolutionary changes in military affairs, the work establishes a baseline for understanding the patterns of change, innovation, and adaptation that have marked war in the Western World since the thirteenth century – beginning with Edward III’s revolutionary changes in medieval warfare, through the development of modern Western military institutions in seventeenth-century France, to the cataclysmic changes of the First World War and the German Blitzkrieg victories of 1940. This history provides a guide for thinking about military revolutions in the coming century, which are as inevitable as they are difficult to predict.