mental supply officer (S-4) in the execution of approved supply plans, except for ammunition, pyrotechnics, antitank mines, and chemical supply. (See pars. 50 and 54.) He commands the regimental train bivouac. (See par. 57.) He usually supervises the receipt and distribution of all supplies except class V items and medical supplies. The latter are sent direct from the division to the medical detach- ment. (See pars. 60a and 62b.)
c. Munitions officer. The munitions officer is as- sistant to the regimental supply officer. During combat, he commands sections of the regimental ammunition train while they are under regimental control. He also commands any company transport that may be employed under regimental control to obtain ammunition at supply points established by higher headquarters. He is charged with procuring ammunition and other class V items and distributing them to battalions and other combat units of the regiment in accordance with the approved plan and unit needs. He establishes and operates the regi- mental ammunition supply point. He prepares am- munition records and reports.
d. Regimental motor transport officer. The regi- mental motor transport officer employs elements of his platoon as directed by the service company com- mander to procure and distribute supplies and per- form second echelon maintenance on regimental motor vehicles. (See par. 52.)