Changes

Horus next plan would be a strike on the [[Manachean Commonwealth]], a loyalist independent dominion within the [[Coronid Deeps]] to the galactic east of the Cyclops Cluster. This area was not left unguarded.{{Fn|1a}} In the early stages of the [[Horus Heresy]], the Commmonwealth would be one of the earliest prepared regions of Imperial space for the coming of war. Following news of the [[Battle of Isstvan III|attrocity at Isstvan]] and [[The_Flight_of_the_Eisenstein_(Novel)#Part_Three:_Unbroken|word of Horus' betrayal reaching Terra itself]], [[Port Maw]] was used as a layover and resupply station for the fleets which would be deployed to the ill-fated punitive mission to [[Isstvan V]]. When word of its [[Dropsite Massacre|disastrous outcome]] reached the leaders of the Coronid deeps, they at first scoffed and suppressed such reports. Only when the first battered ships of the loyalist survivors trickled in did the weight of what was to come dawn upon them. Messages calling for reinforcement and aid to Terra were lost to warp storms and static, and so the worlds of the Commonwealth could only prepare for the coming onslaught. The Commonwealth could call upon regiments kept to the standards of the [[Solar Auxilia]] pattern, thanks to its high technological and industrial basis allowing for such troops to be supplied and maintained{{Fn|1a}}, while the massive War Fleet of [[Port Maw]]'s Armada would provide for its defense in the void.{{Fn|1c}}