The two World Wars placed unprecedented demands on their participants and had a profound impact on many aspects of national life. The mobilization of human and material resources for total war by three nations in the twentieth century was discussed at the Seventh Royal Military College Military History Symposium in March 1980. In this volume of essays from the Symposium, Arthur Marwick offers a general overview of the problems and consequences of organizing society for total war, while other contributors examine such specific themes as mobilizing international finance for the First World WTar (Kathleen Burk), organizing Canadian war production in World War I and World War II (Michael Bliss and Robert Bothwell, respectively), the political implications of organizing American society for war from 1917 to 1945 (Robert Cuff), and the establishment and expansion of wartime British intelligence services in the two World Wars (Christopher Andrew). The essays will be of interest to historians, political scientists, professional soldiers, and readers interested in the story of the two World Wars and the social and cultural aspects of those conflicts.