"I wonder nowadays whether the neglect of military history and war does not have the effect of giving some people an anaemic and unreal idea of the deeper processes of mundane history. Indeed, it is possible that our conventional history-teaching underestimates the part played by war in the development of our civilisation and our economy, as well as in the rise of the modern state. It has been noted that great constitutional concessions were won from English kings who were usually unsuccessful in their foreign policy; and certainly it is not easy to know what would have happened if King John or Charles I or James II had been more fortunate in this field. Ranke thought that the disgrace suffered by the French monarchy in its foreign policy had much to do with the outbreak of the French Revolution."