Changes

Cut off from the [[Ruinstorm]] created by the [[Word Bearers]], the Imperial worlds of the Coronid Deeps had little time to prepare for the traitor attack and little hope of outside aid. The traitors struck first at the [[Gethsamaine|Gethsamaine System]]. They then struck at the [[Cyclops Cluster]], where [[Dark Mechanicus]] ambassadors convinced the [[Forge World]] of [[M'Pandex]] to join Horus' cause. However on the Forge World of [[Mezoa]] the ruling [[Tech-priest]]s judged the traitor Mechanicum ambassadors to be [[Heretek]]s, forcing Horus to blockade the planet.{{Fn|1b}}

But despite the liberation of Numinal, much of the region still lay in traitor hands. Stalemate ensued, and the Manachean Commonwealth was devastated in a series of attacks and counterattacks.{{Fn|1d}} At [[Lethe (planet)|Lethe]] and [[Revorthe Keep]], the loyalist [[Death Eagles (Blackshields)|Death Eagles]] [[Blackshields]] clashed with the [[Emperor's Children]].{{Fn|1d}}

[[Epsilon-Stranivar IX]], known during the [[Great Crusade]] of Fortress Stranivar, was a world found at the edge of the [[Coronid Deeps]]. By the time of the later stages of the Coronid Deeps campaign, the world had served as the last loyalist stronghold of Horus' flank, garrisoned by a force of small force of [[Imperial Fists]], [[Raven Guard]], [[Iron Hands]], [[Salamanders]], and [[Blood Angels]]. Refusing to yield, the traitors were faced with no other option but a major assault. But while the loyalists were united in a common cause, the traitors were divided among their own agendas.{{Fn|2a}}

However, the loyalist victory was short-lived as less than a year later the Sons of Horus launched a renewed attack that captured the planet.{{Fn|2a}}

*[[Battles of the Horus Heresy (List)]]

**[[Mezoan Campaign]]

*1: [[The Horus Heresy Book Four - Conquest]]:

**{{Endn|1a}}: pg. 18