I like to make all of my missions totally random and this means the direction that the enemy are facing is always random too...

But recently The soldier spawns facing in a random direction then immediately rotates and corrects itself to face north.
If it is a vehicle with a mounted gun, the vehicle stays in its random heading but the gun immediately rotates to point north.

So any AI human or vehicle with an AI controlled weapon will immediately face north instead of a random direction.