A Company Master of the Dark Angels is equivalent to the standard Space Marine Captain of other, Codex Astartes-compliant Chapters. A Company Master leads each of the 10 companies of the Dark Angels and ultimately falls under the command of the Chapter's Supreme Grand Master (Chapter Master). Every Master within the Chapter serves as a member of the Inner Circle, although even at this rank he is not privy to the entire truth surrounding the Chapter's dark past or all of the Chapter's many secrets.