Board Thread:Warhammer 40k General Discussion/@comment-24037808-20160216113913/@comment-26420219-20160217074228

And on this matter, not all Thunder Warriors were killed, and I don’t mean only Arik Taranis. Some of them survived the battle of Mount Ararat and were imprisoned on the prison-hulk of Cerberus. In what was called the Cerberus Inserrection these Thunder Warriors organised themselves and the inmates of the hulk to seize the complex, which was enough for the Emperor to send the War Hounds, the XIIth Legion that would eventually become Angron’s World Eaters. If I recall correctly it should be listed under Notable Campaigns.