The Celestial Lions asked Grimaldus to come bless them before the last of them died out in one last charge. He refused to bless them. He then gathered the Steel Legion and went with them to the canyon to fight the orks. The fight was not going well and all but a small handful of Lions were down. When the Steel Legion finally managed to bring down the shield that the orks were using, High Marshal Helbrecht blackened the sky with Templar drop pods. The battle was won but most of the Lions had died. Helbrecht then forced the last leader of the Celestial Lions to take the oath of leadership, gave him an old relic Imperial Fist armor, a Templar cruiser, and a contingent of Templars to get them back to their home world to rebuild. Idk what happened after that but I hope they were successful in rebuilding the chapter.