Second Base was an outer colony.[1]


Along with Green Hills, was one of two colonies lost directly after Harvest in 2526. Initially, the UNSC had hoped to cover up their loss by explaining it away as a communications blackout caused by Insurrectionists. Eventually, they revealed that the UNSC was now fighting a xenocidal alien hegemony, and that this and another colony had been destroyed with the total loss of two million civilians between them.[2]


  1. Halo Mythos: A Guide to the Story of Halo - Page 54
  2. Halo Wars: Genesis - Page 5
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