Never trust the bridge, especially with artillery. I ran some horse artillery across the bridge and when they got to the end they mysteriously just up and died. There was no enemy around, just a single unit of German Fusiliers on the other side of the map, and there were no stakes laid out or anything.
Just thought I'd get the warning out there if you ever wanna make the battle look cool by ferrying artillery over a bridge, expect them to die.







