The Purity of Spirit was a Covenant CCS-class battlecruiser in the Fleet of Particular Justice. It was one of the first vessels assigned to the Fleet of Particular Justice, alongside its sister ship the Undiminished Entelechy.

Operational HistoryEdit

In several promotional Transmissions on Bungie's website,, the Purity of Spirit sent taunting messages to the UNSC Pillar of Autumn and the planet Reach during the Fall of Reach.[2]

It was the sister ship of the Undiminished Entelechy. In September of 2552, both of these ships were ordered by the Prophet of Stewardship to secretly survey Installation 04 before the UNSC Pillar of Autumn exited slipspace.[1]



  1. UNSC simulations often substitute ship classes in major battles to train tacticians for different situations.


  1. 1.0 1.1 Halo Waypoint: Cannon Fodder - Beta Late Than Never
  2. Halo Encyclopedia, page 275
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