Hall has long been recognized as a leading authority on early modern military technology. Scholars of the period and historians in general will find this the best treatment to date of the impact of gunpowder on Western Europe during the fifteenth and sixteenth centuries. History: Reviews of New Books Combines a good grasp of military history with an understanding of the history of technology... Hall manages to integrate his technical discussion into a refreshing reinterpretation of general military history in the period, and his book is an engrossing read. American Historical Review