Siege of The Rock
The Siege of The Rock occurred shortly after the creation of the Great Rift.[1a]
Overview
Even as the Noctis Aeterna passed, The Rock's shielding was penetrated by a Daemon army led by the Fallen Daemon Prince Marbas and his hordes swarmed the Dark Angels' Fortress Monastery. Soon fighting between the Chapter and Daemons takes place along The Rock's docks, grand halls, and even in the labyrinthine sub-levels and dungeons that burrow deep into the fragment of Caliban it resides on[1a]. During the battle, Marbas nearly crushes the Grand Master Sammael to death, but the Deathwing Grand Master Belial intervenes in time and uses the Sword of Silence to cut off one of the Daemon Prince's massive hands. Before Belial can destroy Marbas however, the Daemon Prince escapes back into the Warp[1b] and his Daemonic army quickly follows him. The Daemons' sudden disappearance confuses the Chapter, as the invaders achieved little beyond mindless slaughter and destruction; though there is one among them who knows differently. As the Dark Angels begin to recover from the invasion, Supreme Grand Master Azrael travels deep within The Rock, to reach a hidden dungeon cell that holds the Fallen Angel Luther. He discovers though, that Luther has escaped and Azrael suspects Marbas' invasion was merely a diversion, so that the agents of Chaos could free their Primarch's betrayer.[1a]
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