Battle of Charybdis IX (Earth-5875)

The Battle of Charybdis IX was a massive engagement between the United Nations Space Command and the Covenant in 2535, as a part of the First Contact War in the Outer colony Charybdis IX.

Prelude
Before the battle began, a group of kig-yar mercenaries led by Reth started trading modified Covenant weapons with human Insurrectionists in the Rubble. The Insurrectionists, however, were unaware Reth was servind under the orders of the Prophet of Truth, who sought to discover the location of Earth and finally exterminate humanity. The kig-yar placed hidden trackers in the weapons, which they spread through several human colonies, one of them being Charybdis IX, which was discovered by the Prophet of Regret's Fleet of Sacred Consecration.