Horus Heresy · atlas

010.M31 · The Road to Terra · date approximate

Damnation of Pythos

Place: Pythos · Segmentum Ultima

Fig. 1 · Place on the map

Atrocity The surviving Shattered Legions perish; Madail manifests in the world.

Xenos structures of Chaos on the Death World of Pythos served as a beacon in the Ruinstorm, drawing in the surviving Iron Hands of Captain Durun Atticus’s 111th Clan-Company along with allies from the Raven Guard and Salamanders. The arriving fleet of Davinites sacrificed itself, opening a full invasion of Chaos; the astropath Rhydia Erephren warned Terra at the cost of her life, and Atticus was easily slain by the manifested daemon Madail.

Open in the atlas

Sides

Loyalists

Legions

Commanders

  • Durun Atticus

Traitors

Special forces

Commanders

  • Madail
Type
Warp
Scale
2 of 5

Significance

The Shattered Legions are wiped out; Madail, Herald of Chaos Undivided, enters the world.

Disputed in the canon

  • The era of the Ruinstorm / Imperium Secundus. The summoning of the daemon Madail of Chaos Undivided.

Sources

  1. Lexicanum: Madail
  2. The Damnation of Pythos (D. Annandale)
  3. Atlas compilation · source check 2026

Permalink: https://astart.es/en/events/damnation-of-pythos/