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{{stub}}'''Omon''' is an oceanic city on the world [[Jhanna]]. It rebelled against the [[Imperium]] under the oppression of [[Chaos Space Marines]] and other renegades and was recaptured by two [[companies]] of [[Ultramarines]] during the [[Purgation of Jhanna]]. These companies were led by [[Marneus Calgar]] in 807.[[M41]].

[[Category:Planetary InstitutionsUltima Segmentum]]