This volume investigates the strategic planning, logistical preparation, and execution of the Allied invasion of Normandy during the summer of 1944. Gordon A. Harrison, writing as part of the official United States Army in World War II series, utilizes primary military records and operational logs to reconstruct the decision-making processes of the Supreme Headquarters Allied Expeditionary Force. The text provides a granular analysis of how complex command structures managed the cross-channel assault against entrenched German defenses.

Historians and military researchers regard this work as a foundational primary source for understanding the logistical scale of the Normandy invasion. Readers frequently note the high density of technical detail and the objective, administrative tone characteristic of official military history documentation.