Every Blood Angel knows of the Black Rage, even those of the lost company, The Angels Cruentus. To fall into its grip is to think you are the Primarch himself. The Fallen from Faith are the marines who succumb to the primal rage of the gene-seed's fault. They become madmen whose muscles and every thought is filled with bloodlust. Their ferocity and close combat prowess are without equal. They are the truly lost, they are the madness that corrupts all Blood Angels, they are The Fallen from Faith. Augustus is disheartened every time he hears of another brother falling to the Black Rage, but he has use for them. He will supply them with the glorious death they seek as he leads them into battle. They will perish in the flames of war, for the good of the Imperium, just like the Blood-Father himself.

Death Company Unit from my army "The Angels Cruentus"