Carus Brom is voiced by the Canadian actor Michael Dobson.
Carus Brom is the highest ranking Imperial Guard officer on Tartarus at the time of the Blood Ravens' arrival to the planet. Although a capable commander, he was simply overwhelmed by Orkamungus' horde and struggled to contain the increasing desertion among the ranks. He did his best to assist Gabriel Angelos and the Blood Ravens until Inquisitor Mordecai Toth overruled their authority. Carus Brom turns to Chaos in the Dawn of War novel, and is slain in the final stages of the conflict by Gabriel Angelos with Godsplitter. There is no mention or reference to this event in the game, however.
It's interesting to note that upon completing the Eldar campaign in Dawn of War: Soulstorm, in the ending cinematic the Imperial Guard assigns a new leader for the Kaurava system. The new general is apparently Brom.