Battle of Korll

The 'Battle of Korll was an engagement between the UNSC Navy and the Covenant Reborn, occurring on 8 October 2555 in the Korll system. The most major intelligence-led operation by the newly formed UNSC Office of Defence Intelligence at that time, the UNSC's intent was kill one of the Covenant Reborn's Hierarchs, the Prophet of Humility, and to destroy the only known in existence, True Ascension. Although the UNSC succeeded in eliminating Humility, True Ascension was able to escape before the UNSC plan was put into full effect.
ODI suspected that the intelligence that led to Humility's death was actually intentionally leaked by the Prophet of Obedience, allowing him to eliminate a fellow Hierarch and potential rival. In this knowledge, ODI decided to attempt the mission anyway, albeit with additional wariness. The Prophet of Contrition had been killed under suspicious circumstances in March of the same year, leaving Obedience the sole leader of the Covenant Reborn. Obedience himself later reunified the Covenant Remnant, by massacring its leaders, on 8 September 2557 at Bagheera 5.