The Red Dragons' Chapter primarily wear red Power Armour. The Aquila or Imperialis on the chest guard is yellow. Their white squad specialist symbol (which indicates Tactical, Devastator, Assault or Veteran) is painted on the right shoulder pauldron. A black Roman numeral is painted on the squad specialty symbol, which indicates squad number. In accordance to the Codex Astartes, the colour of the shoulder pauldron trim indicates company number -- i.e. White (1st Company), Yellow (2nd Company), Red (3rd Company) etc.
The Red Dragons' Chapter badge is a large white dragon's head breathing fire, centered on a field of red.
- The Citadel Journal #45, "Genesis of a Chapter", by Dan Ebeck, pg. 22