Random and unwanted runs and charges.

[Mozzington]

Can't understand why this happens but I've come across it a few times and it is most annoying. When in battle and lets say you take a bit of a beating and your troops retreat and you ask them to move away from the attackers position so you can heal them...I sometimes find that on the next turn without me telling them to do it they will run back at the enemy and attack again thus dieing as they are not healed and a large section of my army disappears.

I'd assumed it was the enemy attacking me but surely they would have to come to me instead of vice versa.

 

[ParadigmShifter]

If a stack of 2 or more units gets attacked by a unit which has more than 1 move (so a mounted unit or a unit which came by road) the battle takes place where the unit attacked from (i.e. not where the stack is, they can only move there after there are no other units on the tile). Your troops run to the square they get attacked from in that case, they run back if you win.

That's what it sounds like to me anyway.