This book, the result of an international collaborative project, provides a new quantitative view of the wartime economic experiences of six great powers: the UK, the United States, Germany, Italy, Japan and the USSR. A chapter is devoted to each country, while the introductory chapter presents a comparative overview. It aims to provide a text of statistical reference for those interested in international and comparative economic history, the history of World War II, the history of economic policy, and comparative economic systems.