Prosperan Rift War

Imperium Portal

Chaos Portal Thousand Sons

Chaos Portal Tzeentch

Chaos fleet of the Thousand Sons and their Planet of the Sorcerers enter realspace.

The Prosperan Rift War started in M42, after the Daemon Primarch Magnus began to claim the Prosperan Rift's worlds, in order to build an empire within Imperial space. Now the Imperium struggles to defend the Rift, from both the Thousand Sons as well as Chaos forces loyal to Magnus and Tzeentch, who seek to aid the Daemon Primarch in his quest.^[1]

Known Battles and Forces Involved^[1]

Battle of Prospero^[2]

Imperial

• Space Wolves - small force later aided by the 13th Great Company^[2]

Chaos

• Thousand Sons

Assault on Sortiarius^[1]

Imperial

• Dark Angels - 1 reinforced Company
• Grey Knights - 1 reinforced Brotherhood

Chaos

• Thousand Sons

Relief of Harlecrypt Tertius

Imperial

• Space Marines
  • Death Hunters - 4 Companies
  • Raven Covenant - 5 Demi-Companies
  • Vipers Penitent - 3 Vanguard Strike Forces
• Sisters of Battle
  • Order of the Silver Veil - 7 Preceptories
  • Order of the Sacred Rose - 9 Preceptories
• Imperial Guard
  • Wahiikan Raiders - 23 Infantry Regiments
  • Vastadt Guards - 27 Infantry Regiments
  • Tekarn Iron Fists - 46 Armoured Regiments
• Knights
  • House Derthos - 3 Lances
  • House Dunstan - 5 Lances

The Chancyll Suppression

Imperial

• Space Marines
  • Dragonspears - 8 Companies
  • Knights of Doom - 3 Crusades
  • Crimson Raptors - 4 demi-Companies
• Sisters of Battle
  • Order of the Bloody Rose - 11 Preceptories
  • Order of the Blessed Martyr - 8 Preceptories
• Imperial Guard
  • Chancyllian Cannoneers - 35 Artillery Regiments
  • Chancyllian Musketry - 65 Infantry Regiments
  • Chancyllian Lightfood - 25 Infantry Companies
  • Praetorian Hussars - 18 Armoured Regiments
• Knights
  • House Brahmica - 2 Lances
  • House Hawkwood - 6 Lances

Warping of Rhammasys

Chaos

• Chaos Space Marines
  • Lorehost of Apoketh - 4 Thrallbands
  • Masters of the Crystal Serpent - 6 Thrallbands
• Chaos Knights
  • House Mutica - 1 Iconoclast House
• The Lost and the Damned
  • Changefyres - 9 Scintillating Legions
  • Infernal Madness - 9 Scintillating Legions
  • Clades of Change - 1 Warcult
  • Denizens of Sloptube 13 - Mutant Horde, unnumbered
  • Rhammastyian Liberators - Unknown

Siege of Vacticinum Prime

Chaos

• Chaos Space Marines
  • The Scourged - 3 Warbands
  • Invocators - 5 Warbands
• Chaos Knights
  • House Gurgeon - 12 Infernal Lances
• The Lost and the Damned
  • The Hellcannonades - 47 Artillery Regiments
  • Chronosatyrs - 54 Tzaangor Warflocks
  • Bulwarks Prismatica - 9 Fortresses

The Upsilon-Kapha Severance

Chaos

• Chaos Space Marines
  • Magisters of the Burning Amethyst - 18 Warbands
• Dark Mechanicum
  • True Believers of Zhao - 1,200 Macroclades
  • Beholders of the Cogchange - 1,800 Macroclades
  • Legio Incurvos - 1 Titan Legion
  • Legio Inardescus - 1 Titan Legion
• The Lost and the Damned
  • Disciples of the Eternal Flame - Unknown
  • Talons of Change -9 Scintillating Legions
  • Infallible Duplicity - Subversive Division

Sources

• 1: Psychic Awakening: Ritual of the Damned, pg. 9
• 2: Ashes of Prospero (Novel) - Chapters 1-2