Ephisian Atrocity
The Ephisian Atrocity was an event that took place on the planet Ephisia.[1]
The Imperial world had undergone a Imperial Guard founding and as such millions of soldiers and vehicles had mustered on the dust plains outside one of the Hive Cities of the planet. The Alpha Legion however, had infiltrated the mustering with a large number of psykers who rose up and devastated the troops, causing hundreds of thousands of deaths.[1]
