This manual prescribes the duties to be performed in the service of the 105mm Howitzer Motor Carriage, M37, by the personnel normally assigned to a howitzer section of an armored Field Artillery firing battery.
"These 1930 regulations contain instructions governing the conduct of all coast artillery target practices, other than small arms; a description of the analysis of drill and target practice; a description of the reports to be rendered by all unit...
"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 1944 manual prescribes the knowledge and skill required to serve effectively the multiple gun motor carriages M15 and M15A1. Variations in assigned materiel may necessitate changes in the prescribed drill."