Army extension courses. Special text : Organization of the army / prep. under the dir. of the War Department for use with the Army Extension … Army extension courses. Special text : Organization of the army / prep. under the dir. of the War Department for use with the Army Extension … Army extension courses. Special text : Supply / prep. under the dir. of the Quartermaster General for use with the Army Extension Courses Army extension courses. Special text : Supply / prep. under the dir. of the Quartermaster General for use with the Army Extension Courses Army extension courses. Special text : Care and operation of motor vehicles / prep. under the dir. of the Chief of Infantry for use with …