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Second Battle of Installation 00
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The Battle of Installation 00 was a large battle fought between the UNSC forces of the UNSC , Spirit of Fire Atriox's Banished forces, and the residing Sentinels of Installation 00.
2531, the UNSC Spirit of Fire had traveled to and fought the Covenant Empire at a Forerunner Shield World that housed a fleet of Forerunner ships. The  Spirit destroyed the world, but at the cost of their Shaw-Fujikawa Translight Engine, leaving them adrift.
Spirit of Fire eventually found its way to Installation 00, 28 years later. Upon arriving, they discovered a ruined UNSC base creating a distress signal. Red Team scouted the base out, only to encounter Atriox. In the ensuing skirmish, Douglas-042 was injured, Alice-130 became MIA, and the AI Isabel was recovered from the base.
Jerome-092 and some UNSC forces, assaulted Decimus' salvage operation on the Southern Spire and destroyed it.
- Halo Wars 2 Level: The Signal
, Page 72 Halo Encyclopedia
- Halo Wars Level: Reactor
- Halo Wars Level: Escape ↑
- Halo Wars 2 Level: A New Enemy