Cult of Balthalamus
The Cult of Balthalamus was a Cult whose followers began a civil war on the Imperium world of Magdellan Prime. In the years of anarchy and bloodshed that followed, a main focus of the Cult's attacks was the Preceptory Reclusium of the Battle Sisters of the Order of the Ebon Chalice. Though they launched constant attacks on the Reclusium they could never breach its defenses and eventually the Sisters were able to launch a counter-attack upon the Cult. This signaled the end for the Cult of Balthalamus as soon after the Sisters began their attack, a Space Marine relief force of the Fire Angels, Sons of the Kraken and Red Seraphs arrived on Magellan Prime to end the Cult's rebellion.[1]