5. DUTIES OF OFFICERS IN BATTALION SUP- PLY ECHELON. a. Battalion supply officer (S-4). (1) The battalion supply officer is assigned to the transportation platoon, service company. (See par. 52.) He performs staff and supply duties as directed by the battalion commander and is responsible for the functioning of the battalion supply system in the field and in combat, with particular reference to rations, water, ammunition, gasoline, and oil.
The duties of battalion S-4 include-
Preparation of the battalion supply plan
based upon the regimental supply plan and the tactical plan of the battalion commander.
(b) Supervision of elements of the company transport and battalion trains (ammunition and kitchen and baggage trains) when they are operat- ing under battalion control. He is assisted in this duty by the battalion motor transport officer.
(c) Coordination with the regimental supply echelon regarding details relating to the movement of battalion supplies and trains.
(d) Determination of the supply requirements for companies and attached units through personal contact.
(e) Establishment and operation of the battalion ammunition supply point.
(f) Supervision, during combat, to insure that an adequate supply of ammunition is delivered to com- panies and any attached units.