SUMMARY
The Battle of New Harmony was an assault on the colony New Harmony by Covenant forces in early 2537. The UNSC ultimately prevailed in space, though the event is also referenced as the 'Fall of New Harmony', likely due to heavy losses the ground forces and colonists experienced. Data gained during the battle led to the discovery of Covenant shipyard on asteroid K7-49, the site of Operation: PROMETHEUS.
RELATED MEDIA
These events are referenced in the novel Halo: Ghosts of Onyx.