I see how mixing up someone's settings would cause them to lose the battle, I think that was the whole purpose of an ambush. Catch them off guard. No time to set up lines. Why is this a problem? Have we not been looking for something that allows a realm with very few troops to gain an upper hand?
One thing that I would highly suggest for ambushes, the attackers gain no Honour or Prestige in the battle, where as the defenders gain more than usual for surviving it (if they do).
Because there's a difference between giving someone an advantage and giving someone an automatic win.
