"The Sangheili have turned against us for they have allied with the Humans! This is truly the greatest herecy, and we shall burn their planets, destroy their fleets, and open the path to the Great Journey."
―Demathus, self-proclaimed leader of the New Covenant
The Second Great War (GWII), known alternatively as the Interstellar Conquest or to ex-Covenant races as the War of Valiant Deceit, was a major conflict spanning more than a quarter century. The three major combatants were the United Coalition of Systems (known originally as the Orion Defense Initiative), the Royal Empire, and the Sacred Regime. It would result in no major victory for any side, though from the ashes, the United Nations Space Command would rise as the most powerful entity within the Orion Spur.