Horus Heresy · atlas

008.M31 · Shadow of War

Battle of Hive Ilium

Place: Coronid Deeps · Segmentum Obscurus

Fig. 1 · Place on the map

Traitor victory The Knight-Lancers of House Vyronii die, but strike down a Reaver Titan of Legio Tempestus.

On the hive world of Manachea a handful of Cerastus Knight-Lancers of the loyalist House Vyronii stood with the defenders of Hive Ilium against the Sons of Horus. Although they were beaten, the Knights ambushed elements of the traitor Legio Tempestus and struck down the Reaver-class Titan “Raxvalian” at Block Fortress 77-4.

Open in the atlas

Sides

Loyalists

Commanders

  • Gios Jah

Traitors

Legions

Type
Battle
Scale
2 of 5

Significance

The steadfastness of House Vyronii in the Coronid Deeps, cut off by the traitors’ onslaught.

Canon note

  • Part of the broader Battle of the Coronid Deeps / Manachean War, on the hive world of Manachea.

Sources

  1. Fandom: House Vyronii
  2. Lexicanum: Battle of the Coronid Deeps
  3. Atlas compilation · source check 2026

Permalink: https://astart.es/en/events/battle-of-hive-ilium/