DM-3-1123[1] was a habitable planetary system.
The Forerunners populated the world of DM-3-1123 b in DM-3-1123, but it was eventually attacked by the Flood. While a Forerunner naval group engaged a Flood fleet of 149 non-military vessels in the system, the Flood landed on DM-3-1123 b and infested it, and the Forerunner fleet was forced to bombard the planet to cauterize the Flood's spread.
- ^ Terminal One, Halo 3
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