Changes

 Like most Space Marine Legions, the combat disposition of the legion altered upon the discovery of their Primarch. EventuallyAlthough, for the Emperor finally unleashed Twelfth Legion, this was both a relatively minor and massively damning alteration at one and the same time.====The Early Crusade====The War Hounds were finally unleashed as a legion force partly by circumstance. The Imperial colony on [[Cerberus]] rose up in rebellion, and it quickly became apparent that Space Marine forces were needed to quell the rebellious colony insurrection. The [[Great Crusade]] having begun, most of the Space Marine Legions had already been assigned to [[Expedition Fleets]] and sent out into the wider [[galaxy]]. The Emperor was therefore minded to activate the War Hounds, sending them to Cerberuspersonally, with instructions to carry his wrath to those that defied him. Cerberus was invaded at 0300 hours Terran; the all-clear signal was transmitted by the War Hounds' commander at 0808. When asked how many prisoners were waiting to be processed, the War Hounds' commander replied that he had not been ordered to take any. Attached [[Imperial Army]]troops, sent into Cerberus in the aftermath, reported discovering scenes of shocking butchery and indication of massive casualties, on both sides.{{Fn|14b}}====The Bloody 13th====and after that attached them to the 13th [[Expeditionary Fleet]] where they preformed well as shock troops during the early [[Great Crusade]]. However they were not without problems, as incidents of attacking fellow [[Imperial Army]] troops in their way during battle persisted. The [[War Council]] concluded that enforcing harsher discipline in the Legion could overcome this problem.{{Fn|14}}