In the early 1950's the United States Army Transportation Corps (USATC) was considering what would happen to an enemy railroad if another European war broke out. If the native locomotives in said enemy country were destroyed or rendered inoperable (as they likely would have been) what would pull the US military trains on their soil? The answer was not easy, as many countries have different gauges, loading clearances and couplers. The USATC decided on specific set of guidelines for it's Military Road Switcher (MRS) and waited to see which companies would offer the best design. American Locomotive Company (ALCO) beat out Electro-Motive Division (EMD), and won the contact.
Thus the 96 ALCO locos were stored awaiting a war from 1954 until 1970, when the USATC concluded the capture of a potential enemies railway system was no longer an necessary objective. Thirteen of the 96 were sold to the Alaska Railroad, with the last of them being retired in 1984. At least five still survive today in various conditions ranging from stripped of parts to fully operable.
The model I chose to model is inspired by US ARMY number 2069, located at the Museum of Transportation in St. Louis, Missouri. Instead of being painted black with yellow warning stripes, mine is painted in what I call the "Raccoon" paint scheme. This is a fictional dark gray and black stripe paint job under the Brick Railway Systems company flag, and is numbered 6902.
The rear of the loco on my railroad is the long hood. In the real world it doesn't really matter, as their would be control stands for both directions of travel if this were a real-world engine. Also, the letters "BRS" should go on the long hood while the number "6902" should go on the shorter hood section.