851 BCE

851 BCE

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BCE

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Next: 850 BCE • 791 BCE

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Events

Unknown

• During the first Age of Reconciliation, the Covenant face rebellion by Sangheili heretics opposed to the Writ of Union. Under the leadership of Ussa 'Xellus, the heretics known as the Ussans depart from Sanghelios to Shield World 0673 in order to seek sanctuary from the Covenant.