Just an FYI if anyone finds this thread in the future: I'm not the only one in my fellowship who can't see some of the enemy combatants some of the time. Apparently it doesn't always happen (since I just started fighting, I wouldn't know), but will occur for a period of time with one unit type. The suggestion was made to try to watch both the fighters on screen and the scrolling units at the bottom. I tried this, and could tell better where the mist walkers were as well as what was happening to/with them. I then tried a manual fight and was able to see and strike them. The red octagons still lit up and when the cursor was over them correctly, it would change to a red attack sword like normal. BTW, I won that fight! I was using the Combat 101 formula with 5 Sword Dancers (cause I've neglected my military thus far, will be building a training ground when I get the next expansion. Could sure use some of those dogs now, lol!)