Changes

In [[M42]], House Derthos took part in the [[Indomitus Crusade]] as part of [[Battle Group Irasmus (Fleet Primus)|Battle Group Irasmus]]. {{Fn|2}} Alongside the rest of the Battle Group, House Derthos took part in defending the [[Pankallis Sub-sector]], from [[Orks]] and [[Tyranids]] during the [[Octarius War]]. During the fighting, Lances of Knights from Houses Derthos and [[House Mundast|Mundast]] moved to reinforce the battered defenders of the Cogwall, rescuing surrounded forces and enabling a fighting retreat as the Ork's numbers were too great to oppose them.{{Fn|2}}