Misbegotten

Dan Abnett’s Misbegotten is a Primarchs short story set just prior to the Ullanor campaign, in which Horus joins Captain Hastur Sejanus to see out the bitter end of a grinding compliance action. Where other systems have welcomed the Imperium with open arms, Velich Tarn resists with deadly force, its tiny population utilising horrifying biomechanical constructs in battle against the Lunar Wolves. To Sejanus it’s a blot against the record of the 63rd Expeditionary Fleet, but Horus believes he sees the root of what would drive someone to fight so hard against an Imperium promising hope for mankind.