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Siege of Inwit

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Siege of Inwit
Conflict Horus Heresy
Date 009-013.M31
Location Inwit Cluster
Outcome Loyalist victory
Imperium Traitors
See order of battle See order of battle
Unknown, presumed heavy Unknown

The Siege of Inwit (009.M31 - 013.M31) was a Horus Heresy campaign, that Warmaster Horus' Traitor forces waged against the Imperium's Inwit Cluster.[1]


It was undertaken by dozens of Traitor fleets, who each sought to claim the prize of the Imperial Fists Legion's Homeworld, Inwit. The siege then steadily increased in intensity for four years,[1] with the Imperial garrisons being occasionally reinforced by contingents of the Imperial Army and Mechanicum.[3]

Eventually, a vast Traitor force including elements of the World Eaters, Iron Warriors, and Thousand Sons[3] eventually fought their way to Inwit itself as the remaining loyalists sought to dug-in and make a final stand. After the invaders then laid siege to the world, the Imperial Fists lost dozens of warships in desperate attempts to break the blockade and seek reinforcements. While the Imperial Fists Frigate Astral Majesty was able to reach the Dark Angels forces, they soon found themselves requisitioned for Lion El'Jonson's Crusade of vengeance instead of relieving Inwit.[2]

However, Warmaster Horus' direct assault on Terra drew the many traitors away from the Inwit Cluster.[1] This allowed a relief force of Salamanders, Imperial Army, and Mechanicum forces to reach Inwit and break the siege.[3] In the wake of the traitors' retreat, however, they left behind a string of burning and wasted worlds across the Inwit Cluster.[1] After their victory at Inwit, the local loyalists intervened in the Malagant Conflict.[3]

Order of battle



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