Army extension courses. Special text : The Air Corps supply system / prep. under the dir. of the Chief of The Air Corps for use … Army extension courses. Special text : Attack aviation / prep. under the dir. of the Chief of the Air Corps for use with the Extension … Army extension courses. Special text : Classification of enlisted personnel / prep. under the dir. of the Adjutant General for use with the Extension Course … Army extension courses. Special text : Industrial mobilization : (procurement planning office of The Assistant Secretary of War) / prep. by the Planning Branch, Office … Army extension courses. Special text : Combat principles, the Cavalry rifle squad and platoon, mounted and dismounted / prep. under the dir. of the Chief … Army extension courses. Special text : Transportation : rail / prep. under the dir. of the Quartermaster General for use with the Extension Course of … Army extension courses. Special text : Signal communication for all arms and services / prep. under the dir. of the Chief Signal Officer for use … Infantry drill regulations, United States Army : Special edition with interpretations by the President of the Tactical Board army regulations. military school Chemical warfare service / War Department : Chemical warfare board / 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 …