An Astartes slaughtered 30 armed soldiers who ambushed him

"Helig Gallor kills the last of some Traitor Excertus on the walkway behind Sydal House. Once of the Death Guard's Seventh Great Company, now Knight Errant, Gallor's loyalty is uninterrupted. He looks at the bodies littering the flowerbeds around him. The fools thought they could ambush him. They should have brought more than thirty if they'd wanted a fair fight, though nothing has been fair for a very long time. Gallor recognises the insignia on the blood-soaked tunics. Merudin 18th Assault Cadre… or, at least, that's what they had been once. Merud, he thinks. That's a long way out, beyond Cycax. These men had come a long way to be here. They'd come a long way just to die."

-The End and The Death: volume one