Wolves of Fenris.

I fight without a helm. Better to see fear first-hand, then behind a helm. Traitor after traitor falls as I stalk through the streets. My grey armour is stained with blood. The pelt across my shoulder is drenched with gore.

I howl as a fresh batch of traitors appear, and then I rip them apart with my wolf-claws; my Guard, Terminator-armoured like myself, follow my lead; storm bolters boom and claws flash as more traitors are sent to their deaths.

We see traitor-marines come forward. Black Legion. 50 of them, 10 of us. 10 wolves, against 50 daemon-worshipping traitors. One major advantage. They are clad in power-armour. They die. A wolf falls, and the rest, myself included, howl in anger and redouble our efforts. The last falls and we move on to the next fight.

More Wolves join our rampage, ranging from Blood-claw to Wolf-guard, and even a Rune-priest. Assembled like this, none of our enemies can survive. My retinue cripple tanks, which are then finished off by Blood-claws, who lob melta-charges at the easy prey. Waves of traitors fall to the amount of firepower we possess.

Few fall as we fight, yet each one is avenged seconds later by howling brothers. Blood flows in a tide down the body-choked streets. And all types of armour are painted crimson after wading through enemies for so long.

The howling mass of Wolves moves through the city, killing any resistance that appeared. My blood-lust is fully awakened, as is my retinue's, and so we race ahead, followed by a raving pack of Blood-claws.

We find lots to kill, and spend hours wading through enemy after enemy. A lucky bastard hits me, and gives me a small nick across the shoulder. I disembowel him slowly. His death screams make the wolf inside howl with ecstasy at the blood-shed.

All good things come to an end, and that applied to wars. The Chaos taint was eradicated, the populace punished, and the Wolves congratulated.

As we board our ships, leaving this world in fear of the Wolves, I look up to the sky and muse aloud to my retinue:

"When the last of us falls, and the Imperium follows soon after, will we go quietly, or with a defiant howl?"

In response, they pause and howl loudly, it is soon picked up the others, and soon every Wolf there howls at the sky in defiance, and the surviving populace cowers at the sound.

I grin. Good answer Brothers.