Horus Heresy · atlas

006.M31 · The Isstvan Massacre · date approximate

Phobos Raid

Place: Mars · Segmentum Solar

Fig. 1 · Place on the map

Loyalist victory The loyalists steal the Sarcophagus of the First Fabricator General and withdraw to Terra.

Loyalist Skitarii under Zagreus Kane raided the automated defence systems of Phobos, the moon of Mars, for the Sarcophagus of the First Fabricator General. A diversionary force of ~3,000 battle pilgrims pinned the defenders while a stealth group extracted the relic and escaped to Terra. Thus for the first time in history Skitarii met Skitarii.

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Traitors

Special forces

Commanders

Type
Battle
Scale
1 of 5

Significance

The first battle of Skitarii against Skitarii; the loyalists save a relic of the Mechanicum.

Disputed in the canon

  • The exact year is not fixed — during or after the Schism of Mars. The first battle in history of Skitarii against Skitarii.

Sources

  1. Lexicanum: Schism of Mars
  2. Atlas compilation · source check 2026

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