Erebus

Erebus’s significance extends beyond the number of defenders destroyed in immediate combat. In the novel’s concluding phase, he regards the rising Ruinstorm as the completion of a successful ritual. Its disruption of routes and communications belongs to the purpose of the attack.

His assessment also recognises that the Ultramarines have salvaged something and exacted a cost. That recognition prevents the defenders’ counterattack from disappearing inside the scale of the enemy’s design. This record describes his role and viewpoint within Know No Fear rather than importing a wider catalogue of his actions from other books. It links him to the storm because that is where the supplied text most clearly exposes the difference between a local reversal and a strategic outcome. His claims are treated as his assessment, not as permission for an invented future chronology.