After the final defeat of the Covenant Remnant The UNSC and their Sangheilian called a peace treaty between the multiple species of the Covenant. While the Sangheilian and the Jiralhanae quickly came to an agreement after a 5 years of negotiation as June 2558 the other species would be joining almost 5 years later when M'dama failed to assassin the Arbiter. The Alliance work mostly the same way, Sangheilian an Jiralhanae are leading the upper cast of this New Covenant. The other species are casted in the same way they used to be. As for the territory it consist of over 1400 worlds.