|Eye of Terror
|Daemon World / Dead World
Using slaves captured from campaigns against the Imperium, the Legion was able to build a massive fortress named Monument on the planet and entombed the corpse of Horus within it. However during the Eye of Terror Slave Wars, the Emperors Children launched a devastating surprise assault on Maeleum, ruining the Sons of Horus' Fortress and stealing Horus' corpse. It was at this time that Abaddon returned to lead his forces to recover Horus' corpse, and the newly-named Black Legion abandoned the ruins of Maeleum.
Many years later Abaddon, likely in response to visions relating to Drach'nyen, dispatched a small force lead by Iskandar Khayon to reconnoiter the abandoned world. There, Khayon and his companions discovered a wrecked Black Templars strike cruiser, which was the Traitor Legions' first inkling of how life continued outside of the Eye. The rest of the information on the contemporary Imperium would come from the following discovery on Maeleum: the prophetess Moriana, calling to Khayon from Horus's crypt.[3a][3b]
Not long afterwards Thagus Daravek would level Maeleum from orbit, and use pieces of its shattered crust as ammunition for mass drivers against the Black Legion before it could escape the Eye for the first time. Maeleum's pieces were fired outside of effective range for mass drivers, and so it was intended as an unspoken insult rather than a direct threat, though the narrowly-avoided confrontation would have crippled the Black Legion.[3c]
- 1: Black Legion - A Codex: Chaos Space Marines Supplement (E-Book) pgs. 13–18
- 2: Extinction (Short Story), by Aaron Dembski-Bowden
- 3: Black Legion (Novel)