Undying Mercenaries Books in Order

James McGill joins Earth's mercenary legions and heads to a mineral-rich alien world for his first campaign. It is a brutal introduction to a galaxy where humanity survives by fighting other people's wars.

An illegal lost colony reaches out to Earth, and Legion Varus is sent to deal with the problem before the wider empire notices. McGill arrives with sealed orders, secret agendas, and his usual lack of restraint.

Tau Ceti looks like a luxurious city-world assignment, but James McGill's easy posting does not stay easy for long. Invasion, imperial weakness, and frontier danger crash into one another at the trading capital.

Unknown aliens strike Earth from a world no one even knew existed. McGill and Legion Varus chase them back to a vicious planet and uncover a growing threat moving through the region.

Up for promotion at last, James McGill is sent beyond imperial borders and into a campaign full of conspiracy, alien politics, and relentless squid troopers. The battlefield is new, but the trouble feels familiar.

A rival empire invades Earth, and James McGill's legion is thrown into the defense of humanity's homeworld. While the brass plans the war, McGill goes hunting for a dangerous technological edge.

Humanity needs allies fast, so Earth's legions head to a brutal frontier world where strength is the only language anyone respects. The prize is an army of loyal troops, if McGill can help win it.

Earth's alien overlords are finally coming back in force, and humanity has a lot to hide. Legion Varus is sent to erase dangerous mistakes, but James McGill is rarely the man you want on a tidy cleanup job.

Humanity's new frontier holdings start disappearing as a rival power moves in from deep space. What should be a sharp military raid becomes a bloodbath, and McGill keeps dying his way through it.

McGill is sent to the core of imperial politics to prove Earth is worth keeping around. On a world lashed by storms, he fights a brutal campaign while angry alien rulers decide humanity's future.

An enormous object of compressed stardust is hurtling toward Earth, and nobody can stop it or explain it. As panic spreads, James McGill is dragged into negotiations over the fate of far more than one planet.

A sabotage mission goes too well, Rigel erupts, and a wider imperial civil war spills into humanity's corner of space. McGill has a talent for making history, usually the messy kind.

Legion Varus is sent to defend a border planet where one side burns, the other freezes, and only a narrow twilight zone can support life. McGill's diplomacy goes about as well as you would expect.

Humanity sees a chance to steal a technological edge from Rigel on a strange planet of crystal formations. McGill is sent in first as an agent, then as a soldier, and the quiet mission does not stay quiet.

Rebels build a hidden base to retake the worlds humanity has seized, and the search for them sparks a wider border crisis. When McGill stumbles onto the camp, the whole war lurches into the open.

Old thefts from Tau Ceti come back to haunt James McGill when Tau agents arrive on Earth looking for revenge. The hunt for the missing loot sends Legion Varus to a frozen, hostile world.

Earth's fleet and legions are drafted into an alien war, and Centurion James McGill is given a mission that could change everything. He must decide whether to serve humanity's overlords or strike at them directly.