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{{War|Name = Coronal Crusade|Image = |Image caption= |Date = [[M42]]|Location = [[Croatoas]]|Outcome = |Combatant1 = [[Imperium of Man]]|Combatant2 = [[Chaos|Forces of Chaos]]|Commanders1 = VanKalder{{Fn|1f}}|Commanders2 = [[Baraghor]]|Strength1 = See order of battle|Strength2 = See order of battle|Casualties1 = |Casualties2 =}}The '''Coronal Crusade''' is an [[Imperial]] [[Crusade]], that was launched to reclaim the [[Chaos]] corrupted [[Industrial World]] [[Croatoas]].{{Fn|1}}  

It began after the [[Great Rift]]'s creation, threw an [[Imperial Navy]] fleet, carrying [[Regiments]] of the [[Astra Militarum]], out of the [[Warp]]. The fleet had no idea where it was at first, but later found the [[Industrial World]] [[Croatoas]]. The once loyal [[Imperial]] world, however, was now in the grips of [[Heretics]]. This occurred after it was bathed by the Warp energy unleashed by the Great Rift, which even affected Croatoas' plant life. After discovering this Heresy, the Regiments became the Coronal Crusade and launched an invasion to reclaim the Industrial World for the [[Imperium]].{{Fn|11b}} The local Chaos forces mainly consisted of worshippers of [[Nurgle]] and [[Slaanesh]] led by rival warlords; they were mainly unified thanks to the efforts of a [[Chaos Space Marine]] [[Sorcerer Lord]], [[Baraghor]].{{Fn|1c}}{{Fn|1e}} The operation did not proceed as planned. The invaders quickly became bogged down, and some Imperial units even defected to the forces of Chaos.{{Fn|1c}} Loyalist regiments suffered heavy losses, resulting in several being consolidated into others. At the battle of Yarroe Canyon, only a single Imperial [[Leman Russ Battle Tank]] survived an ambush of a Tsegohan regiment by Chaos troops.{{Fn|1a}} ==Order of battle=====Imperium===*[[Astra Militarum]]**[[Cadian Shock Troopers]]***[[Cadian Eight-Hundred Heavy Infantry]]{{Fn|1b}}***[[Cadian Thirty-Second Heavy Infantry]]{{Fn|1b}}***[[Cadian Forty-Ninth Armoured]]{{Fn|1b}}***Cadian Eight-Thirty-Two{{Fn|1d}}***[[Kasrkin]]{{Fn|1c}}**[[Geskan Forty-Third Light Infantry]]{{Fn|1b}}**Maesmoch Clanguard{{Fn|1a}}***Maesmoch Seven-Seventieth{{Fn|1a}}**Tsegohan regiments{{Fn|1a}}*[[Adeptus Mechanicus]]{{Fn|1c}}

==Known Astra Militarum Regiments=Chaos===*[[Cadian EightTraitor Guard]]**[[Four Hundred and Forty-Hundred Heavy InfantryFifth Vostokh]]{{Fn|11c}}**[[Cadian ThirtySixty-Second Heavy InfantryFourth Lothor Armoured]]{{Fn|1c}}*[[Chaos Cult]]s and [[Mutant]]s{{Fn|11d}}*[[Cadian Forty-Ninth ArmouredChaos Knight]]s{{Fn|11e}} *[[Geskan Forty-Third Light InfantryChaos Space Marine]]s**[[Noise Marine]]s{{Fn|11g}}

*{{Endn|1}}: [[Steel Tread (Novel)]], **{{Endn|1a}}: Prologue**{{Endn|1b}}: Chapter 1**{{Endn|1c}}: Chapter 3**{{Endn|1d}}: Chapter 5**{{Endn|1e}}: Chapter 6**{{Endn|1f}}: Chapter 15**{{Endn|1g}}: Chapter 16