The War in the Riverlands was a theatre of the War of the Five Kings, albeit the longest, largest and most devastating. The war was principally fought between House Stark and its ally, House Tully, and the forces of House Lannister. Towards the end of the conflict, House Tyrell also entered the campaign on the Lannister side, but they only took part in the Battle of Duskendale towards the end of the conflict. The principle commanders were Robb Stark, the proclaimed King in the North, for the Starks and Tullys and Lord Tywin Lannister for the Lannisters and Tyrells.