Facing of evaders

Still being quite new to the game I have been wondering what is the correct facing of a unit when it evades. Does it move away facing the unit that caused it to evade or facing away from it (with it's back to the opposing unit). I can't seem to find this in the rules but we have been playing it that the evading unit remains facing the unit that caused it to evade?

We play it they move directly to their rear and maintain their initial facing.

Thanks for the reply Granicus, it sounds like we have been doing right.