Since the founding of their Legion at the birth of the Imperium, the Space Marines of the Dark Angels have been feared by their enemies and held in awe by those they protect. Stubborn and relentless in battle, ever vigilant and zealous in pursuit of their duties, the Dark Angels are among the Emperor's most faithful servants.
Yet it was not always so. For ten millennia, the Dark Angels have harboured a sinister secret, an act so terrible and shameful it threatens everything the Dark Angels hold most dear -- and may yet bring them eternal damnation...
Battlecry of the Dark Angels.
COMBAT DOCTRINE
With the break up of the Space Marine Legions after the Horus Heresy, the Dark Angels were split into Chapters according to Roboute Guilliman's Codex Astartes. With the exception of the Deathwing and the Ravenwing, the Dark Angels follow standard Space Marine combat doctrine and their dogged resistance against overwhelming odds is legendary. In situations where even other Space Marines would fall back, the Dark Angels will fight to the bitter end rather than give ground to their foes. This is also reflected in their stubborn refusal to move in the face of the enemy, even in situations where it would sometimes be tactically beneficial for them to do so.
The Dark Angels are also notoriously intolerant of non-humans and will refuse to fight alongside armies that include alien races. They are highly suspicious of outsiders and often appear unreasonably aloof and intransigent. Indeed there have been a number of occasions where the Dark Angels have withdrawn suddenly and with no explanation from a warzone when confronted by an Imperial Inquisitor or Missionary.
