- Dark Marches Crusade (610-759.M36) - In the wake of the Age of Apostasy, the Segmentum Tempestus saw a resurgence in power and renaissance of expansion, known to Imperial historians as the "Rising Storm". With the blessing of Terra, Segmentum Tempestus authorities launched a number of crusades and campaigns to destroy lingering threats within their domain, and pushed back and fortified the borders of the Imperium. The most successful of these was the Dark Marches Crusade, commanded by Lord Tempestus Hal Orpheus, lineal descendants of the Rogue Trader house that had first explored the Orpheus Region's sinister reaches millennia previously. The Stormwalkers sent three Brotherhoods of Astartes to take part in the massive Imperial Crusade.
The Stormwalkers' Chapter colours are not listed in current Imperial records.
The Stormwalkers' Chapter badge is not listed in current Imperial records.
- Imperial Armour Volume Twelve - The Fall of Orpheus, pp. 17-19
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