Akkad was born on a Colchis steeped in worship of the Emperor. The priests spoke of hope, of a future where all people would enjoy prosperity and equality, and everything in his life showed their words to be a lie. Even in an advanced and enlightened world, anyone could see the lives of ease and luxury lived by the privileged, while his own family slaved away to barely survive. His only escape from poverty was qualifying to be raised to the Astartes, leaving his family to an unknown fate.
In these days, the Word Bearers had already found the Primordial Truth in a grand pilgrimage, and while they kept it from the mortals of Colchis, Akkad was taught it upon his induction into the legion. Unlike the beautiful lies of the Emperor, the worship of Chaos made sense. The universe was indifferent at best and more often actively malevolent, ruled by cruel and inhuman intelligences with values beyond mortals. Akkad devoted himself to understanding these mysteries, seeing them as an opportunity to elevate himself even further.
His first battle as a full brother was on Istvaan V. He battled across Ultramar in the Shadow Crusade and was on Terra when the armies of the true Gods tried to cast down the False Emperor. He proved himself as a leader and a student of the mysteries of faith during this time, and served as an acolyte, joining a rout into the Eye of Terror.
Akkad took part in the regular backstabbing and jockeying for position among survivors, swiftly gaining the crozius and the rank of Apostle. His elation was short lived. Despite failing shamefully in overthrowing the false Emperor, his spirits were strong until the day Lorgar ascended to daemonhood and sealed himself away. The loss of the Aurelian shook him like nothing ever had. He was ashamed at the backstabbing and infighting overtaking the legions, even within his own ranks, and departed on a pilgrimage to determine the will of the gods. He would seek out lore, opportunities to prove himself, and try to understand his fellow legions so he could work to reunite the broken hordes and to personally ascend beyond the mere material.
He is currently working in a Night Lord warband, and is certain he has completed any meaningful purpose within it. The Night Lords have no respect for the gods, shunning their power or trying to use it foolishly like a toy. They attack the Imperium not out of holy purpose, but at most out of a spiteful desire to tear down what they built or more usually for crude entertainment. It is time for him to move on to greater things and continue his path to wisdom and enlightenment while enacting the will of the gods.