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Schism of Mars is a 1-book reading order in Warhammer 40,000, spanning Horus Heresy. Below is every entry in suggested reading sequence — series order first, then in-universe chronology — so you can follow the story from start to finish and see where each book sits in the wider 40k timeline.
Free reading-order poster
An original, shareable Schism of Mars reading-order poster — no Games Workshop art, just the books in order. Pin it, download it, or share the list.
Original summaries and chronology labels generated from the same catalog powering the atlas.
Graham McNeill
A Mars-centered Heresy novel about the Mechanicum's internal fracture and the strategic cost of rebellion spreading off the battlefield.
005.M31 - 005.M31
exact date, high confidence
First published 2008
This reading order matches publication order — release sequence and suggested reading sequence are the same here. Browse every book by release year on the publication-order page.