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Robert Rath has 3 books in the Warhammer 40,000 catalogue, listed below in publication order with where each fits on the timeline.
Original summaries and chronology labels generated from the same catalog powering the atlas.
Robert Rath
A characterful xenos standalone about two ancient rivals whose feud crosses absurd spans of history.
667.M41 - 999.M41
era date, medium confidence
First published 2020
Robert Rath
A strong standalone about Imperial assassins operating inside an Imperial Knights power structure, useful for readers who want intrigue instead of front-line war.
000.M41 - 999.M41
era date, medium confidence
First published 2022
Robert Rath
A large-scale account of Cadia's final crisis and a key bridge between classic late-M41 stories and the Era Indomitus.
999.M41 - 999.M41
exact date, high confidence
First published 2023