Changes

The Legio also took part in the Beta-Garmon Campaign, fighting alongside [[Legio Vulpa]] during the [[Second Battle of Nyrcon]].{{Fn|22a}} They were the tip of the spear of Horus' final attack during the climax of the [[Battle of Beta-Garmon]], engaging in a surprise attack upon [[Beta-Garmon III]] with the [[Sons of Horus]].{{Fn|10}}

During [[Siege of Terra]] the Legio Mortis was unleashed in full, sending hundreds of Titans towards the Mercury-Exultant Killzone of the [[Imperial Palace]] defenses. Led by the ''[[Dies Irae]]'', by this point the Legio Mortis had been heavily corrupted by the powers of [[Chaos]] and many of its Titans demonstrated the ability to regenerate from damage or operate independently of a Princeps.{{Fn|12a}} During the battle for the Mercury-Exultant Killzone, the Legio Mortis annihilated their long-hated enemy, the [[Legio Ignatum]].{{Fn|12b}}

**{{Endn|8a}}: Chapter Nineteen

**{{Endn|8b}} Chapter Twenty-Three

**{{Endn|9a}}: pg. 24

**{{Endn|9b}}: pgs. 108-111

*{{Endn|10}}: [[Titandeath (Novel)]], Chapter 33

*{{Endn|11}}: [[Horus Rising (Novel)]], Part Two, Chapter Seven

**{{Endn|12a}}: Chapter 15

**{{Endn|12b}}: Chapter 21

*{{Endn|13}}: [[Adeptus Titanicus: Traitor Legios]], pgs. 28-30

*{{Endn|14}}: [[War Zone Nachmund: Rift War]], pg. 33

*{{Endn|15}}: [[Loyal to the End (Short Story)]]

**{{Endn|17a}}: The First Parallel, Part Three

**{{Endn|17b}}: Storm of Iron, Part Four

*{{Endn|19}}: [[Cybernetica (Novella)]], Formulate

*{{Endn|20}}: [[The Horus Heresy Book Two - Massacre]], pg. 36

**{{Endn|21a}}: pg. 7

**{{Endn|21b}}: pg. 17

**{{Endn|21c}}: pg. 82

**{{Endn|22a}}: pg. 20

**{{Endn|22b}}: pg. 29