This volume investigates the operational integration and training protocols of American Expeditionary Forces (AEF) units embedded within British and French commands during the First World War. The text, compiled by the Center of Military History, utilizes primary source documentation, including official correspondence, training manuals, and after-action reports, to reconstruct the logistical and tactical challenges faced by American troops. It argues that the rapid deployment and subsequent attachment of U.S. units to Allied armies necessitated a unique, hybrid approach to military training and command structure.

Historians and military researchers frequently cite this series as a foundational reference for understanding the administrative complexities of the AEF. The prose is highly technical and dense, serving primarily as a resource for scholars rather than general readers.