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The Battle of New Harmony was an engagement between the United Nations Space Command and the Covenant Empire during the Human-Covenant war.


During the battle, a prowler, the UNSC Razor's Edge, managed to attach a telemetry probe to a retreating Covenant frigate.[3] As well, Catherine-B320's retired grandmother was killed in the fighting.[4]

This engagement was at least partially fought in-orbit or near New Harmony, and was one of the few UNSC naval victories of the war.[2]


The probe that the Razor's Edge launched led to the discovery of K7-49. Eventually this asteroid was attacked in the costly but victorious Operation: PROMETHEUS.[3]

The death of Catherine-B320's grandmother allowed her to be inducted into the SPARTAN-III Program.[4]


  1. Halo Encyclopedia - Page 272
  2. 2.0 2.1 Halo Encyclopedia - Page 299
  3. 3.0 3.1 Halo: Ghost of Onyx - Page 83
  4. 4.0 4.1 Halo Waypoint: Universe - Catherine-B320