Elite-Brute War

The Elite-Brute War was a War that took place immidietly after the Human-Covenant War. Following the betrayal of the Elites by the rest of the Covenant bar a few loyal Grunts and Hunters, the Elite sided with the Humans instead and eventually prevailed over the Covenant, destroying their forces. However, the war between the Elites and the Brutes continued. Eventually, the fighting reached Dosiac, the Brute homeworld, and despite the Arbiters offers of peace the Brutes simply wouldn't stop fighting, and so the Elites glassed Dosiac to dust and murdered them all.

And the Galaxy did cheer.