Cleansing of Calderon

History
In 342.M41, as the 2nd tribe was finishing a cleanse of an unnamed hive world, they received a distress signal from the Forge World of Calderon. The World had fallen prey to heretics and Chaos Space Marines, and the population was being captured or killed at a rapid rate. The Solar Wardens soon departed towards the planet, arriving to find the planet consumed by Chaos, with no survivors. The tribe bombarded the planet from orbit before landing to finish off the survivors, cleansing the planet thoroughly and painfully.