As First Captain of the Sons of Horus and commander of the elite Justaerin Terminators, Abaddon occupied a position of trust within the Legion matched by few outside the Mournival itself, a warrior whose battlefield record made his loyalty to Horus feel less like ambition and more like simple, unshakeable devotion. He fought at his primarch's side through campaign after campaign of the Great Crusade, and when Horus's soul turned toward Chaos, Abaddon's faith in his commander proved deep enough to follow him into rebellion without the hesitation that fractured so many other officers and Legions.
Throughout the Heresy, Abaddon distinguished himself in engagement after engagement, his skill with blade and bolter matched by a tactical sense that made him one of the Warmaster's most reliable instruments in the war's bloodiest theaters. The final catastrophe at Terra, where Horus fell to the Emperor and the rebellion's momentum broke at last, left Abaddon among the shattered Legion's survivors, a warrior whose devotion to his primarch would, in the ages that followed, curdle into an entirely new and even more consuming ambition of his own.
Heroes & legends
