The Evolution of the G4 Function at Division Level: 1921-1945.

This thesis describes the evolution of the G4 logistics function at division level during the period 1921 through 1945. It begins with a brief description of the U.S. Army general staff and is followed by an examination of the staff organization and system of supply used by the divisions during World War I. These two areas provide the background material for subsequent discussion of the division G4. The evolution of the G4 function is described in terms of organization, duties and responsibilities, command and staff relationships, administrative procedures, and the system of supply. Five conclusions are reached 1 The G4 section was organized as a result of lessons learned during World War I. 2 The duties of the G4 were increased steadily during the period 1921 to 1945. 3 The G4 section required additional personnel during WWII. 4 The G4 functioned as the chief supply planner and coordinating staff officer for the division. 5 The G4 generally followed published doctrine and the teachings of the Command and General Staff School.