Army extension courses. Special text : Care and operation of motor vehicles / prep. under the dir. of the Chief of Infantry for use with … army regulations. military education Army extension courses / War Department Army extension courses. Special text : Mess management / prep. under the dir. of the Quartermaster General for use with the Army Extension Courses Army extension courses. Special text : Weapons and musketry / prep. under the dir. of the Chief of Infantry for use with the Extension Course … Physical training : With special equipment / War Department field manual Service company and medical detachment (supply and evacuation) rifle regiment / [War Department] ; prep. under dir. of the Chief of Infantry field manual Rifle company, rifle regiment / [War Department] field manual Rifle regiment / War Department ; prep. under dir. of the Chief of Infantry field manual Rifle battalion / [War Department] field manual Heavy weapons company, rifle regiment / [War Department] field manual Service company and medical detachment (supply and evacuation) infantry regiment / [War Department] field manual Defense against chemical attack