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 … Foundation drilling and grouting (Nov. 1945) / Department of the Army, Office of the Chief of Engineers Hydroelectric power plants : Architectural design (June 1948) / Department of the Army. Office of the Chief of Engineers Hydroelectric power plants : General requirements (April 1948) / Department of the Army. Office of the Chief of Engineers Subsurface investigation : Geophysical explorations (September 1948) / Department of the Army. Office of the Chief of Engineers Foundation grouting : Equipement (April 1948) / Department of the Army. Office of the Chief of Engineers Wall design : Flood walls (January 1948) / Department of the Army. Office of the Chief of Engineers Subsurface investigations : Soils (March 1954) / Department of the Army. Office of the Chief of Engineers army regulations. military school Chemical warfare service / War Department : Chemical warfare board / War Department army regulations. military school Chemical warfare service / War Department : General provisions / War Department army regulations. military school Chemical warfare service / War Department : General provisions / War Department