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This article contains information about the Silver Timeline, and is not a part of the established Halo canon.

Previous:

Fall of Reach

Concurrent:

Battle of Installation 04

Onyx Conflict

Conflict:

Human-Covenant War

Date:

April 13, 2553

Location:

Onyx, Zeta Doradus system

Outcome:

Decisive Flood victory

  • Flood takes control of the UNSC facility on Onyx
Details
Belligerents

United Nations Space Command[1]

Flood (Later in the conflict)

Commanders

ADM Margaret Parangosky[1]

Master Chief Petty Officer John-117

None

Strength

Multiple Flood combat forms

Casualties
  • Heavy
  • Light
 

The Onyx Conflict was a battle during the Human-Covenant War. Initially an internal conflict between the UNSC and a small group of survivors from the Fall of Reach, it escalated into an outbreak after both doctors Catherine Halsey and Miranda Keyes found Flood spore samples that infected almost everyone on the facility.

List of appearances

Sources