- Magdellan Prime Civil War (143-151.M41) - When the followers of the Cult of Balthalmus plunged the world of Magdellan Prime into anarchy and bloodshed, the Battle-Sisters of the Order of the Ebon Chalice bore the brunt of the fighting. The Order's Preceptory Reclusium was repeatedly targeted by the maddened hordes of Chaos Cultists, but held out against seemingly impossible odds until relief eventually arrived. By the time a relief force consisting of Space Marines of the Sons of the Kraken, Fire Angels and Red Seraphs Chapters arrived, the Battle-Sisters had begun a determined counter-attack and victory was ultimately won.
The Sons of the Kraken's Chapter colours are not listed in current Imperial records.
The Sons of the Kraken's Chapter badge is not listed in current Imperial records.
- Imperial Armour Volume Two (Second Edition) - War Machines of the Adeptus Astartes, pg. 20