Army extension courses. Common subcourse : Introduction and lesson 1 : basic rules and principles; qualifications of armed forces of belligerents; and, commencement of hostilities Army extension courses. Common subcourse : Sick, wounded and dead (sanitary formations and establishments, sanitary transportation, Red Cross emblem) structures series Civilian defense : protective construction / prepared by the War Department Army extension courses. Special text : Map reading, infantry / prep. under the dir. of the Chief of Infantry for use with the Extension Course … Army extension courses. Special text : Tactics and technique of infantry and associated arms / prep. under the dir. of the Chief of Infantry for … Army extension courses. Special text : Military sanitation and first aid / prep. under the dir. of the Surgeon General for use with the Army … Army extension courses. Special text : Defense against chemical warfare / prep. under the direction of the Chief of the Chemical Warfare Service for use … Army extension courses. Special text : Dental administration / prep. under the dir. of the Surgeon General for use with the Extension Course of the … Army extension courses. Special text : Training management, medical department / prep. under the dir. of the Surgeon General for use with the Extension Course … Army extension courses. Special text : Veterinary sanitation / prep. under the dir. of the Surgeon General for use with the Extension Course of the … Army extension courses. Special text : Organization and employment of the veterinary service infantry and cavalry divisions / prep. under the dir. of the Surgeon … Army extension courses. Special text : Current procurement and distribution / prep. under the dir. of the Quartermaster General for use with the Extension Course …