Changes

'''Know No Fear''' is the seventeenth novel in the [[Horus Heresy Series]], written by [[Dan Abnett]]. It is scheduled for publication was released on February 28, 2012. It documents the battle for the planet [[Calth]] between the [[Ultramarines]] and the [[Word Bearers]] now turned traitor after the massacre at [[Istvaan IV]].

Unaware of the wider [[Horus Heresy|Heresy]] and following the [[Warmaster]]'s increasingly cryptic orders, [[Roboute Guilliman]] returns to [[Ultramar]] to muster his [[Space Marine Legion|Legion]] for war against the [[ork]]s massing in the [[Veridian]] system. Without warning, their supposed allies in the [[Word Bearers]] Legion launch a devastating invasion of [[Calth]], scattering the [[Ultramarines]]' fleet and slaughtering all who stand in their way. This confirms the worst scenario Guilliman can imagine – [[Lorgar]] means to settle their bitter rivalry once and for all. As the traitors summon foul [[daemon]]ic hosts and all the forces of [[Chaos]], the Ultramarines are drawn into a grim and deadly struggle in which neither side can prevail.