Unit cannot be attacked. This was a reinforcement unit that started off map. As it moved onto the map it just walked through my entire stack like it wasnt even there. It did take a few losses in melee, but I could not order units to fire on it. As you can see in the shot I have two of my own units selected, what you cant see as it doesnt show up in the screen shot is the mouse cursor. It should either be a targeting reticle or a sword for melee attack. Its just an X. They are walking towards the other side of the screen. Hopefully when it gets there it ends the battle.