Battle of Tralsak
Taking place on the Ice World of Tralsak, the battle saw the loyalist Legio Atarus and Legio Agravides clash with the traitor Legio Magna and Legio Victorum. In addition, loyalist Shattered Legions forces and the World Eaters fought across the disintegrating landscape of ice. Ultimately, the battle was indecisive and Tralsak was flash-boiled to steam. Each side used the cover of the world-enveloping fog thrown up by the destruction to evacuate and redeploy elsewhere. Nevertheless, numerous supporting Knights on both sides remained to fight.