When it comes to the Battle for Middle-earth games, I am the maker of the Easterling faction for each one. That said, I have made extensive amounts of undeniable progress towards this end goal.
Just like the Angmar thrall masters in just plain Rise of the Witch-King, these guys also sound war horns to summon low-price, low-quality units for flooding your opposition in the first 15 minutes of gameplay.
But unlike the Angmar thrall masters, these guys are older gentleman warriors whose thralls are younger gentleman warriors in swathes of 20 dual-wielders, pikemen, or archers on foot; or 15 cavalry archers.