I noticed both heavy and light trains carry huge amounts of supply. Use is 1 supply per turn while they carry 40 supply units per element. Supply wagons elements use 1 supply per turn while carrying 20 supply units per element. So are heavy and light trains considered supply sources for other units during combat and provide the supply source combat bonus?
If not, should they? Or were trains used as supply sources and should be portrayed in the game?
I also noticed a railroad engineer unit in the model database. I wonder what was the intention behind that unit.