Expert at hiding in woods

Anyone have any idea about what "expert at hiding in woods" means?

Perchance they can move in the woods without being seen? I've seen a few units with this ability, but haven't been in a position to test it out.

Well must be something with visivility. if you can see them, or like you said the move and can't bee seen, but I yet have to try this and btw it's better to try it with the Gauls or any barbarian faction.

I'm thinking it has to do with the range at what they get detected. Some units can hide so close to the enemy that they can nail them in less than 2 seconds. Also it seems the unit getting targeted has a huge delay in command ability as the comp always turns unit's around when you are going to hit them in the back but for some reason they never turn if the unit just came out of hiding.

Hmmm, okay, thanks Oaty and Lonewarrior. I'll have to play as Gauls or Germania in my next campaign and test it out a little better. I have noticed that hidden units are discovered when enemies are fairly close but always wondered it they lost the element of surprise or if the morale penalty for the enemy is the same.
Playing the Romans, the whole hiding and ambushing thing seems to have very little utility. In my current campaign, I've had 1 instance where I was able to hide, but I'm almost always attacking so it's not very helpful. I've never been able to draw a defender into extending themselves into an ambush. Thanks again.
-sizzly