Don't know why I picked this book up this morning, but here's some facts out of it.
The book is
The Railroad Police by H.S. Dewhurst, it's one of the Police Science Series books from 1955.
Fact - To move an infantry division in WW2 (15,000 men) required 65 trains of approx. 1350 cars. For an armored division it took 75 trains from 28 to 45 cars each.
Fact - Every soldier sent overseas the army initially sent 6 tons of equipment and supplies, an additional ton of supplies was sent each month.
Fact - Estimated $40,000 a month in losses of Pullman linens, blankets and such were reported.
Fact - President Truman traveled over 75,000 miles by rail, President Roosevelt traveled over 240,000 miles.
There's all kinds of stories told of what was expected of the RR police and what they encountered. I plan on reading the whole thing soon.
Forgot...here's a link that has some good info:
http://www.therailroadpolice.com/history.htm