Okay so I have one main mission on my map. It's called the Dark Monument. It's locked. It say's I have to kill more Warchiefs to start it. But when I go into Sauron's Army I can only look at the first row of captains which I have all killed multiple times in trying to figure this out. When I get intel I still can't see past the first row of Captains. So, please help if you can..