Unfazed by losing all his limbs and an eye to the Swarmlord, Calgar decided to call the duel a draw. However, witnessing the horrible destruction, including the deaths of the entire First Company, left a lasting impact on Calgar
Despite this, the Ultramarines simply won the battle offscreen and for no adequately explained reason. Since that point onward, the Ultramarines have won every battle they've fought in, even if they should have been impossible. Even their past failures seem to be altered