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Battle of Iydris

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Battle of Iydris
Perturabo and Fulgrim battle on Iydris
Conflict Horus Heresy
Date ~007.M31
Location Iydris
Outcome Fulgrim ascends to Daemonhood
Traitor Legions Eldar Shattered Legions
Primarch Perturabo
Primarch Fulgrim
Lord Commander Eidolon
Warsmith Forrix
Warsmith Kroeger
Warsmith Barban Falk
Warsmith Toramino
Captain Julius Kaesoron
Captain Lucius(KIA)
Captain Marius Vairosean(KIA)
Chief Apothecary Fabius
Unknown, if any Captain Cadmus Tyro
Emperor's Children Legion
Iron Warriors Legion
Legio Mortis
Traitor Imperial Army
Thousands of Wraith Constructs Small force of Iron Hands, Salamanders, and Raven Guard
Heavy Annihilated Light to moderate

The Battle of Iydris was an engagement during the Horus Heresy.[1]


After the Drop Site Massacre Fulgrim, Primarch of the Emperor's Children joined forces with Perturabo, Primarch of the Iron Warriors on the world of Hydra Cordatus. Promising the Lord of Iron perfection, the two embarked on a quest to tip the balance of the rebellion in Horus' favor by journeying into the Eye of Terror and retrieve a weapon known as the Angel Exterminatus. Shortly before they were to leave, Fulgrim was hit by a direct headshot from the vengeful Sisypheum crew member Nykona Sharrowkyn. Fulgrim survived the wound however thanks to the efforts of Fabius Bile. After a brief boarding battle with the Sisypheum that saw the ship escape yet again, the two Primarchs arrived in the Eye and quickly landed on the Crone World of Iydris. Entering an ancient Eldar citadel known as the Amon ny'shak Kaelis, the Emperor's Children and Iron Warriors had to contend with an army of Wraithguard and Wraithlords that had awoken from their slumber. The Wraith constructs clashed with the carefully planned defensive lines of the Iron Warriors aided by the Titans of the Legio Mortis and the debauched hordes of the Emperor's Children, neither side attempting to aid the other.[1]

At the height of the vicious battle Fulgrim attempted to betray his brother and slip away, but was pursued by Perturabo. Both soon arrived in a massive spherical chamber, and Fulgrim revealed to his brother that there was no Angel Exterminatus, but he rather was destined to become such a weapon on this world. Furious, Perturabo attempted to attack Fulgrim but was drained of his power when Fulgrim activated the Maugetar stone that Perturabo had previously received under the guise of a gift. Now with the Iron Warriors Primarchs' power in hand, Fulgrim revealed the purpose of his plan: to achieve Apotheosis, better known as Daemonhood.[5]

However just as Fulgrim was about to complete his ritual and achieve Daemonhood, Perturabo gathered enough strength to charge at his brother but were interrupted by an ambush of Salamanders, Iron Hands, and Raven Guard who had been stalking the traitor fleet in search of vengeance since the Drop Site Massacre. One of the loyalist Astartes during the battle shattered the Maugetar stone, freeing some of Perturabo's energy and giving him the ability to strike down Fulgrim with his Thunder Hammer. However Perturabo only managed to destroy the Primarchs mortal skin and was reborn as a Daemon Prince of Slaanesh. Now a massive but elegant serpentine creature, Fulgrim told his brother that they would meet again then vanished in a burst of Warp energy along with his Emperor's Children.[1]

In the aftermath of the battle, the Iron Warriors spitefully purged the planet before Perturabo set course directly into the Eye of Terror.[1]

See Also


Battles of the Horus Heresy
005-006.M31 Battle of Isstvan IIIFirst Battle of ProsperoWar Within the WebwayBattle of the Somnus CitadelUnrest on CalibanSchism of MarsBattle of DiamatDrop Site MassacreBattle of the Rangda SystemFirst Battle of ParamarManachean WarSignus CampaignTreachery at Advex-MorsSiege of CthoniaBattle for Felweather Keep‎
007-008.M31 Battle of PhallBattle of RavendelveRuin of MaerdanBattle of the Alaxxes NebulaPale Stars CampaignBreaking of the Perfect FortressChondax CampaignSecond Battle of ProsperoFirst Siege of Hydra CordatusBattle of the Furious AbyssBattle of CalthBattle of ArmaturaBetrayal at IthracaDeath of CanopusShadow CrusadeCrusade of IronDoom of BorminaDefence of TyrosDefence of the Three PlanetsBattle of UlixisAmbush at EspandorBattle of Aquila AtollBattle of Drooth IIPercepton CampaignBattle of IydrisThramas CrusadeFall of Baztel IIIBattle of VannaheimSecond Battle of ParamarBattle of Constanix IIMezoan CampaignBattle of BodtBattle of DwellErellian SubjugationSiege of Baal
009-010.M31 Battle of MolechBreaking of AnvillusXana IncursionCarnage of MoroxSangraal CampaignBattle of ArissakBattle of PerditusBattle of SothaDrussen AtrocityScouring of Gilden's StarBattle of NyrconBattle of TallarnCataclysm of IronBattle of NocturneWar of DrakesBattle of PlutoSiege of InwitBurning of Ohmn-MatBitter War
011-014.M31 Reaving of the Xibana ReachesLorin Alpha CampaignSubjugation of TyrinthMalagant ConflictBattle of the Kalium GateBattle of CatallusAxandrian IncidentBattle of the Haddon SystemJarrazr IncursionBattle of TralsakTarren SuppressionBalthor Sigma InterventionBattle of AbsolomScouring of the Ollanz ClusterBattle of ZepathSecond Battle of ZaramundBattle of AnuariBattle of PyrrhanSecond Battle of DavinArgolian MassacresBattle of TrisolianBattle of YarantBattle of KradeBattle of DelugeBattle of Heta-GladiusBattle of the Aragna ChainBattle of KallethBattle of the Diavanos SystemBattle of DesperationBattle of Beta-GarmonWar for AgaropsDefence of RyzaBattle of ThagriaPassage of AngelsThassos IncidentBattle of Zhao-ArkhadSerpent's CoilSiege of BarbarusForicaan CampaignBattle of VezdellBurning of VrexorDawn of DesolationDeath of ChemosBattle of Luth TyreYdursk IncidentFall of TenzebarSolar WarRaid on LunaSiege of TerraGreat Scouring