I'm playing the iOS version at the moment (Ipad) and was wondering: Why is there no Undo button for when you mistakenly move a unit? It's very easy to make a small mistake by lifting your finger and then (for instance) you've sent an air unit to the completely wrong place.
This makes the game very frustrating to play, since you can easily ruin your turn just by lifting your finger at the wrong moment!
I searched the manual and could find no mention of any Undo ability. Please correct me if I'm wrong.