You can explore the complete series, including reading orders, on Warhammer 40k Wiki Horus Heresy Series - Warhammer 40k - Lexicanum
Sixteen of the 54 books are collections of short stories (e.g., Tales of Heresy , Age of Darkness
The betrayal is finalized at Isstvan III, where Horus purges loyalists within his own legions. Essential Mid-Series Milestones
What order should I read the Horus Heresy books in? - Reddit 22 Feb 2021 —
