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 … Physical training : General : without special equipment / War Department Infantry drill regulations, United States Army : Special edition with interpretations by the President of the Tactical Board field manual Criminal investigation war department technical manual Diesel engines and fuels / prepared under direction of the war department technical manual Chemical decontamination materials and equipment war department technical manual Field artillery Fire-control instruments / prepared under direction of the chief of field artillery war department technical manual Coast artillery Gunner' instruction, fixed seacoast artillery, first and second class gunners war department technical manual Preservation and care of seacoast defense matériel / prepared under direction of the chief of coast artillery war department technical manual Enemy prisoners of war