The Great Insurrection

"We cannot allow this encroachment to continue! The Sangheili continue to patrol our worlds, continue to whisper in the ears of our leaders! No more! We will not stand for this!"

- John O'Kelly's speech to his battlegroup immediately before defecting from the UNSC.

The Great Insurrection was a civil war fought between the UNSC and the Alliance of Human Colonies, a faction created by veterans of the Human-Covenant War who were outraged at the increasing use of Sangheili military personnel in the policing and management of many far-flung colonies. The leaders of the rebellion tapped into a vein of widespread discontent in the Outer Colonies and some of the Mid-Rim worlds which had suffered heavy-handed reprisals at the hands of the Unified Earth Government at the end of the 2554 Mid-Rim Protests. On the tenth anniversary of cessasition