Dante's Canyon (Space Marine Battles Novella)

In the wastes of Armageddon, a strike force of White Scars Space Marines bait their ork enemies into a deadly trap. Luring the greenskins to a promethium refinery, the White Scars prepare to annihilate their foes. But one amongst the sons of Chogoris has a great destiny to fulfil, and Stormseer Kanim must keep him alive, whatever the cost to themselves or their human allies... and whether his brother wishes it or not. Read it because
It's always fascinating to see heroes out of their comfort zone – that's when we see who they really are. So taking the White Scars off their bikes, putting their backs up against the wall and surrounding them with orks seems like a great way to find out what makes them tick...