[Micah]

You can't ghost rider an army in a fort, and you can't effectively storm a fort in the late game without burning gems. "Not ever attacking" isn't an acceptable solution here.

Supply wagons and the like are able to be defended, it's not a good comparison. Stealth raiding on an opponent's lands IS supported though. Likewise, mages in the back can sometimes be massacred by flying or fast cavalry units.

Again, though, I think force-fitting comparisons to real life guerrilla tactics is disingenuous. If you can't GUARD your supply wagons because of a engine limitation it's a problem when your opponent can "raid" them.