|Imperium (Dark Angels)
Duthovan served as a recruitment world for the Dark Angels Legion during the Great Crusade. The world was known for its stormy seas and mountainous archipelagos, while Duthovan's population were famous for their strength and boldness. They learned to navigate their entire world in flimsy catamarans and these attributes led the Dark Angels to Duthovan, in search of future Legionaries.
During the Horus Heresy, some of Warmaster Horus' traitor forces were stranded on Duthovan, due to the Ruinstorm. Upon learning of this, the Ultramarines Captain Roscius attempted to isolate them on the world and took part in the Duthovan Blockade. The Captain then invaded with the Ultramarines and other Legion forces that he commanded. Few Loyalists or Traitors, survived the war that followed and Duthovan was the last known warzone that Roscius took part in.