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Undying Mercenaries
Series · 20
books · 2013-2023

Books in series

Steel World book cover
#1

Steel World

2013

In the twentieth century Earth sent probes, transmissions and welcoming messages to the stars. Unfortunately, someone noticed. The Galactics arrived with their battle fleet in 2052. Rather than being exterminated under a barrage of hell-burners, Earth joined their vast Empire. Swearing allegiance to our distant alien overlords wasn’t the only requirement for survival. We also had to have something of value to trade, something that neighboring planets would pay their hard-earned credits to buy. As most of the local worlds were too civilized to have a proper army, the only valuable service Earth could provide came in the form of soldiers…someone had to do their dirty work for them, their fighting and dying. I, James McGill, was born in 2099 on the fringe of the galaxy. When Hegemony Financial denied my loan applications, I was kicked out of the university and I turned to the stars. My first campaign involved the invasion of a mineral-rich planet called Cancri-9, better known as Steel World. The attack didn’t go well, and now Earth has entered a grim struggle for survival. Humanity’s mercenary legions go to war in STEEL WORLD, bestselling author B. V. Larson’s latest science fiction novel.
Dust World book cover
#2

Dust World

2014

The Galactics arrived with their Battle fleet in 2052. Rather than being exterminated under a barrage of hell-burners, Earth joined a vast Empire that spans the Milky Way. Our only worthwhile trade goods are our infamous mercenary legions, elite troops we sell to the highest alien bidder. In 2122 a lost colony expedition contacts Earth, surprising our government. Colonization is against Galactic Law, and Legion Varus is dispatched to the system to handle the situation. Earth gave them sealed orders, but Earth is 35 lightyears away. The Legion commanders have a secret plan of their own. And then there's James McGill, who was never too good at listening to authority in the first place.... In Dust World, book two of the Undying Mercenaries Series, McGill is promoted to Specialist and sent to a frontier planet outside the Empire. Earth's status within the Empire will never be the same.
Tech World book cover
#3

Tech World

2014

The Galactics arrived with their Battle Fleet in 2052. Rather than being exterminated under a barrage of hell-burners, Earth joined a vast Empire that spanned the Milky Way. Our only worthwhile trade goods are our infamous mercenary legions, elite troops we sell to the highest alien bidder. In the third book in the series, James McGill is deployed on another alien world. His third interstellar tour is different in every way. Rather than meeting up with a primitive society, this time he’s headed to an advanced world. Tau Ceti, better known as Tech World, is the central trading capital of Frontier 921. McGill figures he’s lucked out. The assignment looks dull but luxurious. Tau Ceti boasts a planet-wide city with a trillion inhabitants, all of whom are only interested in making a few credits. But all is not well on Tech World. The Empire is crumbling, an invasion is coming, and McGill’s easy ride through life and death has come to an end. Tech World is a military science fiction novel by bestselling author B. V. Larson.
Machine World book cover
#4

Machine World

2015

The Galactics arrived with their Battle Fleet in 2052. Rather than being exterminated under a barrage of hell-burners, Earth joined a vast Empire that spanned the Milky Way. Our only worthwhile trade goods are our infamous mercenary legions, elite troops we sell to the highest alien bidder. In the fourth book of the series, James McGill is up for promotion. Not everyone is happy about that, and McGill must prove he’s worth his stripes. Deployed to a strange alien planet outside the boundaries of the Galactic Empire, he’s caught up in warfare and political intrigue. Earth expands, the Cephalopod Kingdom launches ships to stop us, and a grand conspiracy emerges among the upper ranks of the Hegemony military. In MACHINE WORLD, McGill faces an entirely new kind of alien life, Galactic prosecution, and thousands of relentless squid troopers. He lives and dies in the falling ashes of the Empire, a man of unique honor at the dawn of humanity’s resurgence. MACHINE WORLD is a military science fiction novel by bestselling author B. V. Larson. (To find the first book in the series, search for STEEL WORLD, by B. V. Larson.)
Death World book cover
#5

Death World

2015

The Galactics arrived with their Battle Fleet in 2052. Rather than being exterminated under a barrage of hell-burners, Earth joined a vast Empire that spanned the Milky Way. Our only worthwhile trade goods are our infamous mercenary legions, elite troops we sell to the highest alien bidder. In the fifth book of the Undying Mercenaries series, James McGill meets new challenges. War comes to Earth, striking a devastating blow. Bent on revenge, Legion Varus chases raiders to the stars and discovers an alien menace growing in their home territory. A cancerous species of invaders plaguing our region of the galaxy and must be dealt with. In DEATH WORLD, McGill faces an ever more threatening universe. He learns why the Cephalopod Kingdom has yet to attack Earth, and what’s happening behind the scenes in the Core Worlds. Throughout, he maintains his unbending sense of right, wrong and honor. DEATH WORLD is a military science fiction novel by bestselling author B. V. Larson.
Home World book cover
#6

Home World

2016

The Galactics arrived with their Battle Fleet in 2052. Rather than being exterminated under a barrage of hell-burners, Earth joined a vast Empire that spanned the Milky Way. When the Earth is invaded by a rival empire, James McGill’s legion must defend the Home World. The top brass has complex plans, but none of that matters much to McGill, who chooses his own unique path. Traveling to star systems no human has ever visited, he searches for a technological edge to beat the enemy before it’s too late. Along the way he unleashes new terrors, triggering the biggest battles in human history. HOME WORLD is the sixth book of Undying Mercenaries Series, a novel of military science fiction by bestselling author B. V. Larson. The series starts with book #1, STEEL WORLD.
Rogue World book cover
#7

Rogue World

2017

The Galactics arrived with their Battle Fleet in 2052. Rather than being exterminated under a barrage of hell-burners, Earth joined a vast Empire that spanned the Milky Way. Today, Battle Fleet 921 is returning to Earth. It hasn’t been seen by human eyes since our blissful day of Annexation. But what should be a joyful occasion, a chance to grovel at the feet of superior lifeforms, is rapidly becoming a nightmare. Over the last century, Humanity has engaged in many activities that our Overlords find… questionable. A panic ensues, and Legion Varus is deployed to erase certain “mistakes” our government has made. Projects must be purged to stop Imperial military action. Among the thousands marching to war is one man no politician has ever enjoyed dealing with. One man who’s destined to follow his own unique path through Galactic Law, Morality and the Stars themselves. James McGill is about to make history. ROGUE WORLD is the seventh book of Undying Mercenaries Series, a novel of military science fiction by bestselling author B. V. Larson. The series starts with book #1, STEEL WORLD.
Blood World book cover
#8

Blood World

2017

A dirty deal was struck. Humanity was allowed to keep three hundred rebellious worlds. In return, we declared war on a powerful enemy from beyond the frontier. A frantic build-up of forces has begun, but the task is hopeless. Seeking allies, Earth’s legions are sent to BLOOD WORLD. A planet on the fringe of known space, where the people only respect masters of combat. Earth’s Legions must impress them, but other alien powers have been invited to join the contest. The prize consists of billions of loyal troops—Earth must win. Fighting and dying and fighting again, the struggle is half-mad—but so is James McGill. BLOOD WORLD is the eighth book in the Undying Mercenaries Series.
Dark World book cover
#9

Dark World

2018

Two expanding interstellar powers are about to meet in battle. After the collapse of the Cephalopod Kingdom, Humanity claimed the three hundred rebellious worlds they left behind. But many light years away on the far side of the disputed region, a rival power has begun to move. They're stealing our planets, one at a time. Earth Command decides to invade the center of the frontier to set up an advanced base. The mission to DARK WORLD is highly classified and deadly. Legion Varus spearhead’s the effort, and James McGill journeys to the stars again. How many ships do they have? How advanced is their tech? No one knows, but the campaign takes an unexpected turn immediately. What was supposed to be a snatch-and-grab turns into a bloodbath. McGill dies over and over again, but some battles must be won, even if it means perma-death. DARK WORLD is the ninth book in the Undying Mercenaries Series.
Storm World book cover
#10

Storm World

2018

James McGill is sent to the Core Worlds! In an unprecedented first, Earth sends a message to Mogwa Prime. Unfortunately, the messenger is not met with enthusiasm. Misunderstandings soon threaten all of Humanity. Forced to prove Earth can serve the Empire better than any rival, McGill does his best. Eager to prove our worth to the Galactics, the frontier war between Rigel and Earth is expanded to Storm World. Circled by six moons, the planet is ravaged by wild storms and tides. Battles are fought in raging hurricanes, and death stalks the soldiers on both sides. McGill grimly fights and dies in the mud until the job gets done, but will it be enough to satisfy the angry Mogwa? STORM WORLD, the tenth novel in the Undying Mercenaries Series, is the longest and most thrilling book yet.
Armor World book cover
#11

Armor World

2019

Listening Length: 11 hours and 15 minutes In a twist of fate that rocks the Galactic Empire, James McGill finds himself negotiating the future of a thousand inhabited worlds. An artificial object made of compressed stardust is barreling toward Earth. Is it an invasion ship? A doomsday weapon? Perhaps it’s the final response of Squanto, the Warlord of Rigel who McGill has repeatedly humiliated. Or could it be from the Mogwa, sent to avenge McGill’s assassination of Earth’s Imperial Governor? No one knows the truth of its origins, but the object is huge and unstoppable. Whoever hurled this rock at us isn’t answering our calls. Every weapon bounces off, and the people of Earth begin to go mad as they realize their destruction is only hours away. ARMOR WORLD is the eleventh book of the Undying Mercenaries Series. With over three million copies sold, author B. V. Larson is the king of modern military science fiction.
Clone World book cover
#12

Clone World

2019

James McGill is called upon for a sabotage mission, one that only a man of his unique talents can handle. Unfortunately, he performs too well, and our enemies from Rigel are enraged. They come for us, and war is declared. Both sides call for aid, and it comes from the Core Worlds in the form of two great fleets. The Civil War for the Empire’s Throne spills out into the provinces. In the center of Galaxy, fantastic fleets crush one another and burn thousands of inhabited worlds. When this conflict between the great powers spreads, humanity finds itself swept up in the storm. Can McGill escape this disaster he’s created? Find out in CLONE WORLD, the twelfth book of the Undying Mercenaries series. With over three million copies sold, author B. V. Larson is the king of modern military science fiction.
Glass World book cover
#13

Glass World

2020

The Galactics arrived with their Battle Fleet in 2052. Rather than being exterminated under a barrage of hell-burners, Earth joined a vast Empire that spanned the Milky Way. More than a century has passed since the glorious day of Earth’s annexation. Struggling to hold on to a handful of planets in the frontier provinces, humanity is at war with Rigel. After the destruction of both our fleet and theirs, a time of quiet rebuilding has begun. James McGill was hoping for a peaceful break in the conflict, but an opportunity to gain a significant technological edge arises. He’s summoned to Central and sent off to the stars, searching for a strange planet dotted with crystalline formations. There, the vicious apex predators from Rigel manufacture their impenetrable body armor. McGill is sent to the new planet first as an agent, then at the forefront of Legion Varus. He must face death, evil aliens, and his own untrustworthy government. Find out who lives and who gets permed in GLASS WORLD, book 13 of the Undying Mercenaries series. With over three million copies sold, USA Today Bestselling author B. V. Larson is the king of modern military science fiction.
Edge World book cover
#14

Edge World

2020

A lonely planet circles a star on the very border of Province 921. Critical resources produced there are claimed by both the Mogwa and the Skay. War between the Galactic giants becomes more likely every day. James McGill and Legion Varus are deployed to protect Edge World, a planet that rotates at a walking pace. Each day is as long as a year back on Earth. The sun-side of the world is baked with endless sunshine, the night-side is freezing and full of strange creatures. Living in an inhabitable zone on the edge of their world, a shadow-line between night and day, nomadic peoples roam the planet. It is these inhabitants Earth’s forces must protect. Three fleets converge: the Mogwa, the Skay, and Earth’s growing armada. Peace talks are held, but then McGill opens his big mouth, and things go badly…
Green World book cover
#15

Green World

2021

Rebels build a secret base on Green World. Their plan is to attack Earth and retake all the planets the Humans have conquered. Hegemony starships gather to strike the Rebels first, but where is their base? As the fleets search, Earth warships trespass into Skay space igniting a fresh border conflict between rival Galactics. When James McGill stumbles onto the rebel camp, they’re forced to step up their plans. The world goes up in flames. Friends are permed and cities are destroyed as everything spins out of control. Can Earth survive? Find out in GREEN WORLD, book #15 of the Undying Mercenaries series. With over three million copies sold, USA Today Bestselling author B. V. Larson is the king of modern military science fiction.
Ice World book cover
#16

Ice World

2021

Long before Earth began conquering her neighboring stars, Legion Varus was deployed on Tau Ceti. Valuable and highly illegal treasures were stolen during the campaign, but McGill never gave it a second thought. The Tau haven’t forgotten him, however. For decades they’ve hunted and plotted, and at last they’ve found the pirate who robbed them. Tau agents invade Earth seeking revenge and profit. Caught up in violence and intrigue, McGill is given the task of finding out where the loot has gone and who was responsible for the theft in the first place. The hunt takes Legion Varus to ICE WORLD, a distant planet with an inhospitable climate. Read about great battles and shifting alliances in ICE WORLD, book #16 of the Undying Mercenaries series. With millions of copies sold, USA Today Bestselling author B. V. Larson is the king of modern military science fiction.
City World book cover
#17

City World

2022

Earth’s entire fleet and all her legions are conscripted by the Galactics. Centurion McGill of Legion Varus is among countless troops pressed into service as cannon fodder for the Empire. Not everyone on Earth is happy with the demands of the Galactics. Earth has built up her military for decades, and now she might lose everything in a foreign war no one understands. As the man who has killed more Mogwa than any other human in history, McGill is approached and given a mission. He has a fateful decision to make. Will he serve Earth’s overlords faithfully, or will he assassinate the arrogant alien leaders? CITY WORLD is book #17 in the Undying Mercenaries series, an epic saga of space battles and ground combat. With millions of copies sold, USA Today Bestselling author B. V. Larson is the king of modern military science fiction.
Sky World book cover
#18

Sky World

2022

Earth is locked in a dangerous arms race with Rigel. McGill’s efforts at diplomacy are disastrous. Events spin out of control, and interstellar warfare consumes the outer provinces of the Empire. Great fleets are gathered, and troops are hurried aboard transports. Legion Varus is launched toward a secret target world. McGill leads an early strike against Rigel’s defenses, but his efforts are foiled at every turn. Who could be behind these betrayals? Could his own government be plotting his demise? Find out in SKY WORLD, the thrilling 18th book of the Undying Mercenaries series. With millions of copies sold, USA Today Bestselling author B. V. Larson is the king of modern military science fiction.
Jungle World book cover
#19

Jungle World

2023

A new threat arrives from the rim of the galaxy. From the colorless depths of space, unknown invaders strike worlds across the Frontier Zone. Rigel is a thousand lightyears farther from the Core Worlds than Earth, so they suffer the first attacks. The mood at Central is jubilant. Our greatest rival is falling—now is the time to strike while they’re weak! Legion Varus is deployed to Jungle World, a vital planet deep in Rigellian territory. Our foes, fighting on two fronts, are driven back with ease. But one man questions the wisdom of this move. Should Earth expand with greed, aiding new monsters from the Galactic Rim? That lone voice of reason comes from James McGill. Find out what happens next in Jungle WORLD, the thrilling 19th book of the Undying Mercenaries series. With millions of copies sold, USA Today Bestselling author B. V. Larson is the king of modern military science fiction.
Crystal World book cover
#20

Crystal World

2023

The Silicoids are a growing threat from beyond the frontier. Launching waves of crystalline drones, they ravage colonies all along the border of the Empire. Earth has been forced to ally with her enemies against this mysterious alien menace. Scouts have located a forward base of the freakish creatures, who plot to annihilate all meat-based lifeforms. Earth assembles a joint task force with legions of Rigellian bears, Mogwa battlecruisers, and Saurian troops. Together, they strike as one against Crystal World. After annoying every superior in his chain of command, James McGill is the first to be deployed on the unexplored planet. His to establish a beachhead on this strange, hostile ground. Surrounded and cut off, his troops fight to the bitter end against creatures made of earth, stone, and jewels. Find out what happens next in CRYSTAL WORLD, the thrilling 20th book of the Undying Mercenaries series. With millions of copies sold, USA Today Bestselling author B. V. Larson is the king of modern military science fiction.

Author

B.V. Larson
B.V. Larson
Author · 78 books
Brian Larson is an American science fiction and fantasy author
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