This publication is designed primarily for the cannon battery. It is a how-to-train manual intended to provide general guidance to the commander and his principal subordinates. It is designed for battery leaders and should be used in conjunction...
This manual prescribes the duties to be performed in the service of the piece by the personnel normally assigned to one howitzer section of the firing battery.
"These 1932 regulations prescribe a systematic procedure for the performance of duties in the service of the piece by personnel assigned to howitzer sections of batteries equipped with 155-mm, howitzer materiel, M1917 and M1918."
"This 1939 manual prescribes the duties to be performed in the service of the piece by the personnel normally assigned to one gun section of the firing battery."