The Karus Saga Books in Order
Part ofMarc Alan Edelheit Books in OrderFind The Karus Saga by Marc Alan Edelheit in order, with short summaries, series background, and simple guidance on where to begin.
Last updated: June 10, 2026
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Publication Order
5 books
Lost Legio IX
by Marc Alan Edelheit
2017
Surrounded in Britannia, the Roman Ninth Legion expects destruction and gets something stranger instead. Hurled into a world of gods, dragons, and war, Karus must keep the legion alive and discover why fate chose him.
Fortress of Radiance
by Marc Alan Edelheit
2019
Stranded in a new world, Karus and the Ninth learn the Horde is sweeping across the land. To stop disaster, Karus and Amarra must recover the dread sword Rarokan before the enemy reaches it first.
The First Compact
by Marc Alan Edelheit
2020
Karus returns from the Fortress of Radiance with a dangerous relic and too many enemies. To survive, he must rescue allies, cure a sickness in the legion, and forge an alliance among peoples who do not trust one another.
Rapax Pax
by Marc Alan Edelheit
2023
Karus and the Ninth keep marching through a world at war, carrying the dread sword Rarokan and a holy mission from Jupiter. To survive, he must build alliances faster than the Horde can destroy them.
Brothers of the Line
by Marc Alan Edelheit
2025
Karus tries to hold humans, elves, and dwarves together against the Horde, even as tension frays every alliance. The Ninth Legion marches again, but survival depends on more than Roman discipline now.
Series background & context
The Karus Saga starts with one of Edelheit's smartest hooks. The Roman Ninth Legion, already half legend in real history, is fighting for survival in Britannia when the ground drops out from under the story. Instead of dying where history expects them to die, the legion is thrown into a different world, one with dragons, gods, elves, dwarves, and a war that is already going badly for everyone living there.
The man at the center is Lucious Grackus Lisidus Karus, who becomes the point where Roman discipline crashes into epic fantasy scale. Karus is practical, proud, and built for command, which matters because the Ninth has to stay a legion even when nothing around it makes sense anymore. He is not alone for long. Amarra becomes a key figure in the story, and together they are drawn into a larger struggle tied to Jupiter, known in this world as the High Father, and to a set of tasks that are far bigger than simple survival.
Rome meets prophecy here.
Across Lost Legio IX, Fortress of Radiance, The First Compact, Rapax Pax, and Brothers of the Line, the series keeps asking the same question in bigger ways: can a disciplined fighting force hold together in a world built on magic, myth, and ancient grievance? Karus has to win battles, but he also has to build alliances. Humans, elves, dwarves, dragons, and rival powers all have different fears and goals, and the Horde keeps pressing from the other side.
A lot of the tension comes from that mix. The books love formations, command decisions, endurance, and battlefield logic, but they also care about relics, gods, sacred duties, and the dangerous pull of weapons like Rarokan. That means the series feels larger and older than a simple lost legion adventure. It is not only about soldiers being out of place. It is about how an empire begins, what kind of myth it is built on, and how much blood it takes to make a new order stick.
It also feeds the larger Last War setting in a useful way. If the Stiger books are the middle years, this is the deep past, the part that explains where some of the old promises, old wounds, and old powers came from.
If you like Roman history, military fantasy, and stories where discipline has to stand up to chaos, The Karus Saga is one of Edelheit's most satisfying blends of idea and execution.
Edited by
Software engineer whose passion for tracking book recommendations from podcasts inspired the creation of MRB.
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