How does that work?
A strange battle occured when I interdicted Union stacks sent by train to Harper Ferry. I arrived a day before in a region through which Union troops travelled and they stumbled right into my stack. Fighting ensued. Battles were all in my favor, two Union generals died (sic!), lots of captured enemy wagons etc.
My question is: what are the penalties for stack attacked when they are caught travelling on trains? Limited frontage? What else?