[@TheDarkTemplar]The Covenant Remnant is the only ones currently at war with the UNSC (not counting Forerunners). The only species serving the Covenant Remnant are Elites, Grunts, Jackals, and Hunters. The Brutes and Drones are not fighting currently fighting humans.

Currently the Brutes & Elites are at war with each other. They would not serve together on the same ship.