Victor Davis Hanson in his The Father of Us All; War & History, Ancient & Modern gives due credit to The Age of Battles as one of the finest examples of military history as indeed it is. Since it was first published in 1991, Weigley gives a continual history of warfare, mostly in Western Europe, from Breitenfeld to Waterloo. Starting with the revolutionary tactics of Gustavus Adolphus and ending with the defeat of Napoleon, the author traces the continual quest for the “decisive battle” as a short cut to victory.

After the terrible bloodbath of the Thirty Years War, which left Germany devastated with millions of dead, it seemed as if Europe had made a conscious decision that warfare had to be restructured. One of the key steps to this process was Hugonis Grotius, the historical rules for the limitation of war were formalized. These rules were loosely going back to the rules of chivalry (which were never terribly effective) covered dealing with civilians, plunder, and more. Many rulers in Europe recognized that while war was not going to disappear, they could at least try to limit the overall damage. It was amazing that with the rise of nation states and greater concentration of power and wealth, those who ruled suddenly realized that they had a personal stake in limiting wars which could be dangerous to their position and existence.