Dan

“Loken tried to imagine the future, but the image would not form. Death would wipe them all from history. Not even the great First Captain Ezekyle Abaddon would survive forever. There would be a time when Abaddon no longer waged bloody war across the territories of humanity.
Loken sighed. That would be a sad day indeed. Men would cry out for Abaddon’s return, but he would never come.
He tried to picture the manner of his own death. Fabled, imaginary combats flashed through his mind. He imagined himself at the Emperor’s side, fighting some great, last stand against an unknown foe. Primarch Horus would be there, of course. He had to be. It wouldn’t be the same without him. Loken would battle, and die, and perhaps even Horus would die, to save the Emperor at the last.
Glory. Glory, like he’d never known. Such an hour would become so ingrained in the minds of men that it would be the cornerstone of all that came after. A great battle, upon which human culture would be based.
Then, briefly, he imagined another death. Alone, far away from his comrades and his Legion, dying from cruel wounds on some nameless rock, his passing as memorable as smoke.
Loken swallowed hard. Either way, his service was to the Emperor, and his service would be true to the end.”
― Dan Abnett, Horus Rising