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Battle of Pluto

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Battle of Pluto
PraetorianBattle.jpg
Alpharius and Rogal Dorn battle on Hydra
Conflict Solar War/Horus Heresy
Date ~010.M31
Location Pluto, Sol System
Outcome Loyalist Victory
-Alpharius killed
-Alpha Legion retreat
Combatants
Imperium Traitors
Commanders
Primarch Rogal Dorn
Captain Archamus (KIA)
Captain Sigismund
Captain Koro(KIA)
Captain Vendraal(KIA)[2]
Centurion Gregorius Skekkir(KIA)[2]
Primarch Alpharius (KIA)
Captain Kel Silonius
Captain Ingo Pech
Captain Mathias Herzog
Harrowmaster Indar Vollinus[2]
Strength
Initially ~30 Imperial Fists ships, Inferallti Hussars Regiments, and Black Sentinels
Later large Imperial Fists and Imperial Armada fleet led by the Phalanx
~200 Alpha Legion warships
Casualties
Heavy Unknown but likely heavy

The Battle of Pluto was a battle during the Horus Heresy. It was the earliest major engagement of the Solar War.

Overview

As part of Horus's drive towards Terra, the traitorous Alpha Legion was charged by the Warmaster with plunging the Sol System into chaos in preparation for his arrival. The system was heavily defended by the Imperial Fists Legion led by Rogal Dorn himself, and was on high alert due to the continuing blockade of Mars in the aftermath of the Mechanicum Civil War. Nonetheless the Primarch of the Alpha Legion, Alpharius, set his fleet led by the Battle Barge Alpha on a course for Sol. To infiltrate the Sol System, Alpharius put himself and the entire crew of the fleet into stasis while powering down his ships to minimize heat signature. Thus for the next year the Alpha Legion fleet drifted towards Sol, successfully reaching its outskirts undetected in a way that Warp travel would not have allowed.[1a]

Meanwhile, Alpha Legion Operative teams were activated across the Sol System. These sleeper cells had been planted years before the Heresy, and upon activation wreaked a series of devastating but distractionary terrorist acts. A freighter was detonated over Terra, raining death across the world and killing millions. At the Damocles Starport, the Alpha Legion was able to use rebel cells to devastate the facility. A rebellion was also instigated on Triton. Human Operatives led by the Headhunter Kel Silonius infiltrated Terra and activated a cell of Legionaries that had been hidden in stasis on the world many years earlier, coming into conflict with Rogal Dorn and his Huscarls. However all of these acts were distractions for Alpharius' true objective: Pluto, linchpin of the loyalist surveillance network over Sol. As the Imperial Fists led by Archamus attempted to hunt down Alpha Legion cells and intentions, Alpharius' fleet finally reached Terra. The infiltration of the Legion into the System was completed thanks to sabotage by Silonius' team and the cooperation of anti-Imperial scavenger clans led by Sork.[1a]

As Dorn was distracted by Alpha Legion machinations across the system, the Legion's fleet of over 200 ships led by the Alpha itself struck at Pluto and its moons Charon, Styx, Nix, Kerberos, and Hydra. As the fleet arrived, further uprisings, this time led by Alpha Legion teams, erupted across the Sol System. Ariel and space platforms above Jupiter and Saturn were overrun. Silonius' Headhunter team was revealed to led by Alpharius himself, he had seemingly switched minds with Silonius before wiping his own memories, only for them to be reactivated at the right time by psychic trigger. The real Silonius was aboard the Alpha, leading the attack alongside Ingo Pech and Mathias Herzog. The Alpha Legion's primary target was Pluto's moon of Hydra, home to a Astropathic monitoring station. If the communications station were to be captured, the rest of Pluto's moons would fall and Terra would be none the wiser. Alpharius led his team on the moon, releasing disabling gas across its filtration stations to try and disable the Astropaths and their Black Sentinels guards. The Primarch would also personally kill Hydra's commander, Captain Koro. Meanwhile, the fortress-moon of Kerberos was captured from Imperial Army troops by Alpha Legionaries, who turned the guns of the stations on the loyalists.[1b]

The Imperial Fists had just 30 ships led by Sigismund to defend Pluto. Faced with the suddenness of the attack and severely outnumbered, the loyalist fleet was badly mauled. The Alpha Legion used Fire Ships hidden among their own fleet to wreak havoc on the defenders as the captured fortress moon of Kerberos showered Nix, Styx, and Charon with heavy fire. Silonius, aboard the Alpha, split his fleet into three parts. One moved around the Imperial Fists and clawed back into Pluto's orbit, while another served as a distraction to draw the Fists fire. Another led by the Alpha itself swept past Hydra to troop reinforcements including elite Lernaean Terminators. However the Imperial Fists fought on, maintaining a stubborn defense in the face of overwhelming odds.[1b]

At that time, the Imperial Fists Cruiser Spear of Verria reached the moon Hydra, having been on a deep void patrol when the Battle began. Its Captain, Vendraal, sought to defend the seized moon and readied his forces to deploy into Hydra. He then charged the Alpha Legion fleet and used the Spear to shield its boarding craft that were racing to the moon. Vendraal's forces successfully reached Hydra, under the command of Centurion Gregorius Skekkir, even as the Spear was being taken apart by the Alpha Legion. The Captain and his skeleton crew then fought on for another 22 minutes, before his Cruiser rammed the Alpha Legion Heavy Cruiser Cockatrice. Once on the moon, Skekkir separated Vendraal's Imperial Fists and sent them to reinforce Hydra's vital points. The Centurion meanwhile would lead a force to the moon's plasma reactor, which was being targeted by the Alpha Legion Harrowmaster Indar Vollinus. They were able to reach the reactor before the Harrowmaster, but their rapid pace came at a heavy cost. Only Skekkir and a dozen Imperial Fists were left to face Vollinus' forces, when the Alpha Legion attacked. Despite being outnumbered, though, the Imperial Fists pushed the Alpha Legion back several times and killed dozens of the traitors. Hours later, though, only Skekkir and three other Imperial Fists still lived. The Alpha Legion's Primarch Alpharius himself then arrived, however, and easily killed the Centurion and the remaining Imperial Fists.[2]

Archamus also led a Huscarl contingent on Hydra after correctly discerning the Alpha Legion's true intent. However the Praetorian of Dorn was struck down by Alpharius himself and the battle seemed won for the traitors. It was at this moment that the Phalanx itself arrived over Pluto, leading a massive fleet of Imperial Fists and Imperial Armada reinforcements. The fleet had managed to arrive quickly by slingshotting around the Solar System's competing gravity wells. The Fists fleet was able to pacify Kerberos' guns as Rogal Dorn himself led a landing on Hydra. Dorn teleported directly before Alpharius with Archamus at his feet, and the two Primarchs clashed. Alpharius maintained that he was not doing this for Horus, but instead for the future, and urged Dorn to help him in achieving true victory. But the Fists Primarch ignored his brother and brutally assaulted him. Alpharius was about to impale Dorn with his spear, the dying Archamus saw the strike and tried to intervene but reels harmlessly off of the spears haft. Alchamus was unaware that Dorn had seen the strike, the Imperial Fists Primarch outplaying Alpharius by using a move he'd used against a giant Ork decades earlier. Dorn deliberately stepped into the shot and tanked it in his shoulder to pin Alpharius in place. Dorn then grabbed the spear and using Storm's Teeth sliced Alpharius's hands from his wrists before he slashed Alpharius across the chest, stabbed him with his own spear, and finished by cutting through Alpharius's skull with his mighty chainsword, Storm's Teeth After Alpharius died, Kel Silonius ordered the rest of the Alpha Legion fleet retreat from Pluto. Silonius himself seemed unconcerned with Alpharius' death, stating all in the Legion are one.[1b]

In the aftermath of the loyalist victory, the Imperial Fists oversaw a massive purge of suspected Alpha Legion assets across the Sol System. Meanwhile, Omegon effectively took on the role of Alpharius.[1c]

See Also

Sources


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