Military Railway Manual

Model Railroader Prototype information for the modeler
1

FM 55-20 RAIL TRANSPORT IN THEATER OF OPERATIONS

http://www.globalsecurity.org/military/library/policy/army/fm/55-20/index.html

Atmy Regulation 56-3 MANAGEMENT OF ARMY RAILWAY EQUIPMENT

http://www.army.mil/usapa/epubs/pdf/r56_3.pdf