I never notcied, but create a scenario using debug and you can see exactly what they do. Of course it is a pain to have to watch all the units move around
It really is situational, when is this war taking place, what settings, what is there strength. I mean if you are at war from the fisrt contact, they may only have warriors.
If you do try debug, may I suggest no barbs. It will speed up the game, not watching them chase the barbs down.