New units are added to each of the base game's races.Ī new faction was included, the Imperial Guard, with some units previously available in certain single player missions of Dawn of War. Winter Assault received highly positive reviews. Though Winter Assault required the base game to play, its follow-up expansions, Dark Crusade and Soulstorm were stand-alone, not requiring the base game. Some time after its initial release, Winter Assault and Dawn of War were coupled together in a double pack which featured some art on a fold out cover, an Ork with a flamethrower, or a group of Imperial Guard tanks lined up for attack. Based on Games Workshop's tabletop wargame, Warhammer 40,000, Dawn of War: Winter Assault was released on September 23, 2005.

Warhammer 40,000: Dawn of War – Winter Assault is the first expansion to Warhammer 40,000: Dawn of War for the PC developed by Relic Entertainment and published by THQ.