Arc 15The Second Legion's Betrayal
Saladin's rebellion against the Imperium became an open war as Biberus rallied loyalists and Angron, the First Legion, and reinforcements fought the Second Legion and Rangdan. The arc left Saladin battling Angron and Konrad Curze while denying that he had taken Lorgar.
- Saladin killed Craston before he could finish warning Angron, prompting Angron to declare Saladin a traitor and attack his fleet.
- Dirham freed Biberus, who killed Lauren, released imprisoned Astartes, seized the Remembrance of Ashes, and set course to rescue loyalists on Bloodscab.
- Angron slaughtered a Second Legion boarding force aboard the Conqueror, while Saladin's fleet faced the arrival of a massive loyalist force led by Perturabo.
- The Rangdan and Second Legion ambushed the First Legion, but Lion El'Jonson uncovered the betrayal and deployed forbidden Excindio to destroy the construct's defenses.
- Hannibal withdrew the remaining Rangdan ships after the Excindio destroyed the shield generator, and Lion El'Jonson redirected the First Legion toward the Word Bearers' battlefront.
- Angron boarded Saladin's flagship and fought through its defenders before confronting Saladin, who failed to persuade him to join the rebellion.
- Konrad Curze joined Angron against Saladin, and the two attacked him while demanding that he reveal Lorgar's whereabouts.