David Herrmann's work is the most complete study to date of how land-based military power influenced international affairs during the series of diplomatic crises that led up to the First World War. Instead of emphasizing the naval arms race, which has been extensively studied before, Herrmann draws on documentary research in military and state archives in Germany, France, Austria, England, and Italy to show the previously unexplored effects of changes in the strength of the European armies during this period. Herrmann's work provides not only a contribution to debates about the causes of...