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Operational History Edit
On January 13, 2531, the Tannenberg was near the Groombridge 34 System, where it assisted the Office of Naval Intelligence Prowler UNSC Circumference in attempting to locate Spartan-051, who had gone missing in the area. It was unable to locate him and was soon after called to action because of Covenant activity nearby.
- Halo: Ghosts of Onyx (First appearance)