The fall of Cadia aftermath is the chain reaction that followed Abaddon’s destruction of the Cadian Gate: a broken fortress world, millions of refugees fleeing through the Webway, and a galaxy split in half by the Great Rift. It’s the moment the setting’s status quo permanently changed.
What actually happened to Cadia
Abaddon’s Thirteenth Black Crusade broke the Cadian Gate. The planet itself was destroyed when a Blackstone Fortress was driven into its surface, and the wreckage was swallowed by the expanding Eye of Terror. Cadia didn’t just fall, it stopped existing as a world.
Lord Castellan Ursarkar Creed stayed behind to buy time. His last stand, and his final shout of “Cadia stands!”, became the symbol the survivors carried with them. Sources differ on exactly what happened to him in those final moments, and some accounts hint at a strange figure offering him something before the end.
The evacuation and the flight to Clus
The Mechanicus fleet under Belisarius Cawl ran for its life, harried by Abaddon’s armada. Of the original twenty-five ships, sixteen made it out, carrying roughly two and a half million Cadian refugees.
Cawl’s flagship, the Iron Revenant, shielded the shuttles as they made for the icy moon of Clus. It took punishing fire from thousands of guns and kept going, buying the survivors time to reach the surface.
The Eldar intervention at Clus
On Clus, things looked hopeless until the skies opened and Webway portals appeared. Craftworld Eldar, Drukhari, and Harlequins stepped between the Imperials and the Chaos forces. A warrior in crimson armour and an ornate lady led them.
One of the Harlequins was a long-time ally of Cawl. Trusting her, he led the remaining survivors into the Webway. That rescue is the direct link between the fall of Cadia and the wider Gathering Storm narrative.
Why the aftermath matters
Cadia’s destruction tore the Cadian Gate open and let the Great Rift split the galaxy. Warp travel became unreliable, half the Imperium was cut off, and the Indomitus Crusade was launched to hold what was left together.
The Cadian survivors themselves became a diaspora, scattered across Imperial worlds and fleet assets. Their culture, their discipline, and their rallying cry carried on long after the planet was gone.
Key facts
- Cadia was destroyed during Abaddon’s Thirteenth Black Crusade.
- Roughly 2.5 million Cadians escaped on 16 surviving Mechanicus ships.
- Belisarius Cawl’s Iron Revenant covered the evacuation near the moon of Clus.
- Eldar, Drukhari, and Harlequins opened Webway portals to rescue the survivors.
- The aftermath opened the Great Rift and triggered the Indomitus Crusade.
FAQ
Did anyone survive the fall of Cadia?
Yes. Around two and a half million Cadians escaped aboard sixteen Mechanicus ships, and many were later led into the Webway from the moon of Clus with Eldar help.
What happened to Ursarkar Creed?
Creed stayed behind to cover the evacuation and was lost with the planet. Accounts of his final moments vary, and some hint at a mysterious encounter just before the end.
What is the connection between Cadia and the Great Rift?
Cadia’s destruction let the Eye of Terror expand unchecked, which opened the Great Rift and split the galaxy in two. That’s why the fall is treated as a turning point rather than just a lost battle.