A Dreadnought is a cybernetic combat walker of the intermediate size used by the Chapters of the Adeptus Astartes as heavy infantry support for their Space Marine companies. The most common form of Dreadnought deployed in the 41st Millennium is officially designated a Castraferrum Pattern Dreadnought. fighting for the Emperor and the Imperium of man kin Salamanders Chapter. The salamander chapter dreadnought : I SHALL CLEAR A PATH AND THAT PATH SHALL BE LIT WITH FIRE