The book "History of two hundred and fifty German army units that took part in the war (1914-1918)" is the result of research by the American military department. This work describes in detail the various divisions of the German army that took part in the First World War from 1914 to 1918. Each chapter is devoted to a separate division, presenting the reader with the history of combat operations, strategic maneuvers, leaders, and significant events related to its participation in the conflict. This book will be an indispensable source of information for those who are interested in military history and want to gain a deep understanding of the military operations that took place during the First World War.