On Map, Off Map, what is the consensus please?

[zap]

And, Trains, do those work in this game? Any observations about them. Were they part of the original game or have they been added.
I'm playing a scenario with troops cars, railroad protection cars, and armed cars. Along with a few cars that are set up with artillery.

I have brought up troops to the front and am considering bringing all the armed rail cars back to the front where the enemy is breaking through my lines.