The Combined Fleet of Righteous Purpose was a massive Covenant fleet during the final stages of the Human-Covenant war and the Great Schism. It was responsible for guarding a portion of the outlying Covenant empire. Led by the Imperial Admiral Xytan 'Jar Wattinree, the armada was consisted of at least four smaller fleets of around at least two hundred ships.
During the Great Schism, the fleet was under the control of the Sangheili. The fleet met with as many other Sangheili-controlled ships as possible at the outpost world of Joyous Exultation to plan a massive counter-offensive against the Jiralhanae and to compose a strategy to defeat the Humans after the civil war concluded. To the end of the latter goal, a number of ships from the fleet left with the Incorruptible for Onyx. Moments later, much of the fleet and the planet itself were destroyed by a NOVA bomb on the flagship- the CSO-class supercarrier Sublime Transcendence. However, due to the large size of the area of space that the fleet was occupying, about two-fifths of the fleet were out of range and survived. Some of these ships went out and reinforced the remaining fleet at Onyx, while the rest likely went to defend Sanghelios. The vessels that traveled to Onyx were later annihilated by the world's defending Sentinels.
The Jiralhanae, knowing that Joyous Exultation would serve as an anchor point for the Separatist forces, intended to lay siege to the planet. By the time they arrived, however, both the planet and the fleet had been destroyed.
The fleet lost many ships due to the NOVA bomb and later engagements with the UNSC and Forerunner Sentinels at Onyx. Due to these losses, the leaders of the Covenant Separatists came to the realization that they were outmatched by the Jiralhanae Loyalists and would be destroyed without aid. Upon hearing that the Arbiter, a figurehead of their movement, had allied with Humans on Installation 05, the greater movement accepted this alliance and became united with the UNSC in their shared goal of vengeance against the Jiralhanae and the Prophets.
- Sublime Transcendence - Supercarrier, Imperial Admiral Xytan 'Jar Wattinree commanding
- Far Sight Lost - Destroyer, Shipmaster 'Qunu commanding
- Absolution - Destroyer