I really enjoyed The Last Days of the Third Age, a lord of the rings TC for Mount and Blade: Warband.
It takes Warband’s medieval lord sim and focuses hard on the warfare side of things with lots of huge battles on giant maps, but even tiny skirmishes can affect a faction’s strength. (And with so many factions on both sides of the War of the Ring, you need to pick what to focus on)
Well, not any more, anyways.