Changes

===Horus Heresy===

The legion was corrupted by the powers of [[Chaos]] which enveloped the rebel forces under Horus, and most of the Death's Heads fell towards the vile decay of [[Nurgle]], ironically that same entity which had so disgusted the Titan crews fighting against the hordes of [[Plague Bearer]]s on the moon of [[Davin]] before Horus fell. The Legio Mortis became the most notorious of the traitor Titan Legions. The Legio directly supported Horus before his daemon-possessed treachery against the Emperor. The Legio followed him willingly. When the Horus Heresy began with the virus-bombing of [[Isstvan III]], it was the Legio Mortis which made the landings to scour the corpse-packed hives for the last survivors.{{Cite this}} Later during the [[Fall of Prospero]] a Legio Mortis contingent was dispatched as part of the [[Space Wolves]]-led force. However the Legio Mortis force was near-annihilated during the battle, saved only by the [[Ordo Sinister]]. The humiliation caused their involvement to largely by covered up.{{Fn|9}}

During the [[Schism of Mars]], the Legio Mortis forces supported the traitor [[Fabricator General]] [[Kelbor-Hal]], and were the first titan legion to walk in support of [[Horus]]. These contingents of Legio Mortis, however, were all but destroyed by [[Legio Tempestus]], save for the Hellstorm Cannon of the [[Imperator]] ''[[Aquila Ignis]]''.{{Cite this}}

The Legio Mortis later took part in the [[13th Black Crusade]] of [[Abaddon the Despoiler]] and the [[War of Beasts]] on [[Vigilus]].{{Fn|7}}

==Assets==

===Known Titans===