In this add-on for The Lord of the Rings: The Battle for Middle-Earth II it is your goal to lead the great armies of the Witch-King called the Angmar to victory. But there are also other mentionable additions and changes which come with this add-on:

All six factions from the main game now have access to new units and heroes like Prince Brand a Dwarven captain or the Uruk Deathbringers on the side of Isengard which are powerful two-handed swords-fighters.