In the first chapter of the collection, the reader will find brief information on the scale of the masses mobilized for the war, on the deployment of the armies of the warring parties, on the casualties and casualties of the war, in particular, in the most important battles on the main fronts. In more detail, the collection provides materials on the use of national economic resources in the service of war. A special section in the collection is devoted to the issue of military spending and financing of the world war. Comrade took part in the compilation of the collection. Vishnev, Vantsier, Freiman, Ivanov and Razumova. Part of the digital material was prepared by the Conjuncture Department of the Institute of World Economy and World Politics.