America's entry into the World War in April 1917 presented the United States Army with its greatest challenge in the nation's history. This book examines the U.S. Army's involvement in the Great War from the declaration of war on 6 April 1917 through the initial phase of the German Spring Offensive in March-April 1918. Finally, this book is enriched with the official documents of the U.S. Government from the Fist World War. Contents:Strategic SettingThe U.S. Army Before the WarAmerican Military and Civilian LeadershipThe Amalgamation DebateMobilization of ManpowerBuilding the AEF, 1917American Soldiers Begin ArrivingTraining the AEFMen and Materiel in the AEFThe War Department: Challenges and ReformStrategic Crisis on the Western FrontThe AEF Joins the FightOfficial Documents of the U.S. Government from the Great WarOfficial Positions of Principal Persons Mentioned in the CorrespondenceThe Continuation and Further Spread of the War-Efforts Toward Peace The Continuation of the War-Participation of the United States Neutral Rights Neutral Duties Belligerent Rights and Practice Other Problems and Responsibilities