I just finished watching a great show on the History International channel called Voyages - Trains at war.
I showed the history of the railroads during war time. It showed how trains were used at a logistical and sometimes tactical weapon. It was an excellent show, if you like history!
Attached is a link to the show showing its next air time. At this time it is showing again on Jan 1 @ 4 am - set your vcr’s. Enjoy.