The army behind the army

The book surveys the logistical, technical, and administrative services that sustained combat units during the recent war, chapter by chapter explaining the duties, organization, and methods of communications, chemical defense and gas-making, ordnance and munitions, aviation and observation, intelligence, motor transport and quartermaster supply, engineering and salvage, tank and motor repair units. It combines descriptive accounts of training, equipment, production, and field operations with illustrations and technical details, and emphasizes cooperation among branches, innovation under pressure, and the practical challenges of supplying, moving, protecting, and healing forces behind the front lines.