Well it doesn't say you CAN'T leave combat, it just says you can swap with a friendly character of the same troop type, and places no restrictions on this. However, unless I'm mistaken in this situation it's usually explicitly specified that you can leave combat, i.e. Skitterleap says you can. And being able to leave combat with a 5+ spell, for example, seems a bit overpowered. It makes the Slann pretty much unkillable with the right tactics. Just seems wrong that you could use some great tactics and finally catch a Mage's unit in combat, then all he has to do is survive one round and then he can swap places with someone else. So I wondered how people here play it? Does anyone play that you can't leave combat, or do you all just assume that you can?