From the publisher's website:-
Honor your allegiance with House Stark and carry the wolf’s banner into battle. Summon the courage to ride with Robb Stark in his campaign against House Lannister. Call upon the thundering lancers of House Umber, the shieldmaidens of House Mormont, and the trident bearers of House Manderly. Will you heed the north in its hour of need?
The Wardens of the North reinforcement set adds more Stark commanders and units to the Stark forces of the Battles of Westeros core set, including the formidable Smalljon Umber, loyal Rodrik Cassel, and resourceful Galbart Glover. Use these new characters to take part in battles set in George R.R. Martin’s Song of Ice and Fire fantasy series or make your own fantasy battles!
With a new Battle Plans book, 32 plastic figures, 32 cards, 8 terrain overlays, and 18 tokens, Wardens of the North will bring the honor and courage of House Stark charging into your Battles of Westeros game