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68 past books matching Military Sci-Fi

Federation Marine: Recruit
Jonathan P. Brazee
Sci-Fi · Galactic Empire
Desperate to escape a dead end life, Ryck Lysander enlists in the Federation Marine Corps and discovers the uniform demands everything he has.

Federation Marine: Recruit
Jonathan P. Brazee
Sci-Fi · Galactic Empire · Military Sci-Fi · Space Exploration · Space Opera
Our take
Desperate to escape a dead end life, Ryck Lysander enlists in the Federation Marine Corps and discovers the uniform demands everything he has. Brutal training pushes him past his limits as failure carries a deadly cost. A grounded military science fiction origin story about discipline, sacrifice, and earning a place among the stars by Jonathan P. Brazee.
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About the book
Previously published as “United Federation Marine Corps”, now updated and re-edited.
What would you do to change your life? How far would you go? How hard would you fight?
Rather than work his bones into dust toiling away on a barren world, Ryck Lysander chooses to enlist in the Federation Marine Corps.
But as he quickly finds out, this path isn't just a job. . . it's a calling. . . and not everyone is suited to wear the uniform.
Like millions before him, Ryck will need to develop discipline, endurance, and strength as he’s pushed to the very limit of what he can do, all to earn his ticket off a baren world and into the stars.
But the price of failure won't just mean going home to work the dirt fields. . . it could cost him his very life.
The time to stand is now, and Ryck will need every ounce of willpower to become what the galaxy needs. . .
He must become a Federation Marine.
From USA Today Bestseller Jonathan P. Brazee comes an epic military scifi series that is sure to draw you in and never let go. If you're a fan of Sentenced to War, Old Man's War, or Starship Troopers, this is the series for you.
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Forward Command
Daniel Gibbs & Steve Rzasa
Sci-Fi · First Contact
When crystalline warships overwhelm humanity’s defenses, Colonel Mateo Larra must hold a fragile trans galactic base against an enemy that consumes entire civilizations.

Forward Command
Daniel Gibbs & Steve Rzasa
Sci-Fi · First Contact · Military Sci-Fi · Space Exploration · Space Opera
Our take
When crystalline warships overwhelm humanity’s defenses, Colonel Mateo Larra must hold a fragile trans galactic base against an enemy that consumes entire civilizations. With untested pilots, hidden spies, and an unstoppable living force advancing, survival rests on strategy and resolve. A high intensity military science fiction thriller where one station stands between humanity and extinction.
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About the book
Eighty missiles. Twelve get through. Barely a scratch.
When crystalline warships emerge from nowhere above Joint Base Sagittarius Arch, Colonel Mateo Larra discovers humanity’s weapons are nearly useless. The Kin’s living vessels absorb punishment that would vaporize a battleship, while their energy weapons carve through Coalition shields like tissue paper.
But the Kin are just slaves to something far deadlier… the Home, a moon-sized organism that has devoured civilizations for millennia. It doesn’t want resources or territory.
It wants biological material.
Outgunned and isolated in a hostile galaxy, Larra must defend humanity’s first trans-galactic base with whatever he has: untested pilots, civilian volunteers, and a sheer stubborn refusal to die. While mysterious six-armed aliens watch from the shadows and League spies work within, the Colonel faces an enemy that has never known defeat.
One space station. One wormhole. One chance to stop an unstoppable force.
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The Forever War
Joe Haldeman
Sci-Fi · Military Sci-Fi
The Forever War follows physics student William Mandella, conscripted into an interstellar conflict where time dilation turns short deployments into decades of change back home.

The Forever War
Joe Haldeman
Sci-Fi · Military Sci-Fi · Space Opera
Our take
The Forever War follows physics student William Mandella, conscripted into an interstellar conflict where time dilation turns short deployments into decades of change back home. As he fights a distant alien enemy, Mandella returns to an Earth that grows increasingly unrecognizable. This award-winning classic explores war, displacement, and the lasting cost of survival.
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About the book
A soldier experiences the toll of interstellar war against a deadly alien foe in this Hugo and Nebula Award–winning science fiction masterpiece.
In this novel, a landmark of science fiction that began as an MFA thesis for the Iowa Writers' Workshop and went on to become an award-winning classic—inspiring a play, a graphic novel, and most recently an in-development film—man has taken to the stars, and soldiers fighting the wars of the future return to Earth forever alienated from their home.
Conscripted into service for the United Nations Exploratory Force, a highly trained unit built for revenge, physics student William Mandella fights for his planet light years away against the alien force known as the Taurans. "Mandella's attempt to survive and remain human in the face of an absurd, almost endless war is harrowing, hilarious, heartbreaking, and true," says Pulitzer Prize–winning novelist Junot Díaz—and because of the relative passage of time when one travels at incredibly high speed, the Earth Mandella returns to after his two-year experience has progressed decades and is foreign to him in disturbing ways…
Now celebrating its 50th anniversary, The Forever War is based in part on the author's experiences in Vietnam. It is regarded as one of the greatest military science fiction novels ever written, capturing the alienation that servicemen and women experience even now upon returning home from battle. This book shines a light not only on the culture of the 1970s in which it was written, but also on our potential future. "To say that The Forever War is the best science fiction war novel ever written is to damn it with faint praise. It is…as fine and woundingly genuine a war story as any I've read" (William Gibson).
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Star Scrapper
J.N. Chaney & Matthew A. Goodwin
Sci-Fi · Military Sci-Fi
A lone scrapper uncovers a forbidden AI with a warning that could save the universe.

Star Scrapper
J.N. Chaney & Matthew A. Goodwin
Sci-Fi · Military Sci-Fi · Space Exploration
Our take
A lone scrapper uncovers a forbidden AI with a warning that could save the universe. Branded a criminal, he’s forced into flight across the galaxy, hunted by the very powers meant to protect it. This fast-paced space adventure holds 4.5 stars on Amazon and is praised for its action, worldbuilding, and reluctant hero.
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About the book
The war against the AI was won but a new threat is rising.
Hank Spears is content with his life as a scrapper until he unearths an artificial intelligence who warns him of a grave threat to all life in the universe. Since AI has long been outlawed and anyone caught harboring one is imprisoned or executed, the two must go on the run, fleeing into the far reaches of space.
They must avoid capture, all for the sake of those who would imprison them.
Looking for help from old friends to fight new enemies, Hank must find a way to save himself so that he can save the universe.
Can this simple scrapper become the hero the universe needs before it’s too late?
Find out in Star Scrapper, the thrilling new science fiction series from USA Today Bestselling Author J.N. Chaney and Matthew A. Goodwin.
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Return to the Galaxy
BA Gillies
Sci-Fi · Military Sci-Fi
Best for readers who like space opera with alien invasion, military action, found tech, and interstellar war.

Return to the Galaxy
BA Gillies
Sci-Fi · Military Sci-Fi · Space Opera
Our take
A London Book Festival 2025 winner and #1 Best Seller in seven Amazon categories, Return to the Galaxy follows reborn special forces veteran Ewan Scott and haunted Frigate Captain Velal as alien enemies threaten Earth and the Saret Federation, with a 4.4-star rating from more than 1,300 Amazon reviewers. Best for readers who like space opera with alien invasion, military action, found tech, and interstellar war.
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About the book
Return to the Galaxy – The multi-award-winning series that hit #1 Best Seller in seven Amazon categories
Winner of the London Book Festival 2025 (Science Fiction)
The Humans Are Coming. The Galaxy Better Be Ready.
The astonishing truth? The human race didn’t evolve on Earth.
Ewan Scott was a dying SAS veteran, until a 300-year-old alien AI Avatar offered him a second chance: rebirth in a bio-engineered body, fitter, stronger, and movie-star handsome. His mission? Reunite humanity with its parent civilization, the Saret Federation, before merciless enemies erase all life on Earth.
Frigate Captain Velal, haunted by her past and bound by impossible orders, fights to save what’s left of her civilization. As worlds fall to alien invasion and nuclear fire, the ancient monsters she dreads are hunting for Earth.
An ancient empire falls to betrayal. A merciless enemy closes in. Earth lies defenseless. Its last hope a flawed hero reborn, and a woman who will fight until the stars go dark.Join Ewan, Velal, and wise-cracking Jera in an epic, fast-paced space opera.
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Force Majeure
John Van Stry
Sci-Fi · Galactic Empire
In Force Majeure, Chase struggles to claim his identity as a prince while preparing for the weight of imperial rule.

Force Majeure
John Van Stry
Sci-Fi · Galactic Empire · Military Sci-Fi · Space Opera
Our take
In Force Majeure, Chase struggles to claim his identity as a prince while preparing for the weight of imperial rule. Surrounded by doubt, political pressure, and a criminal past that refuses to stay buried, he uncovers truths about his family that may decide his fate. John Van Stry continues a space opera of power, identity, and survival.
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About the book
Chase is finally coming to understand just what being Prince Chase means, and what becoming emperor to the Solarian Empire will mean as well. He's getting better at the job every day, now if only he could just bring himself to tell Captain Witner and the other members of the command staff that he really is a prince, and not the fraud they all believe he is.
Another thing he is starting to learn more about is Imperial politics and the kinds of things princes and emperors are known for, as well as expected to do. He's also discovering that there are a lot of people who still believe he's a fraud, because of Neill's efforts at proclaiming him as such. Of course his criminal background isn't helping him much there.
What is helping him however are some of the people he's discovering, and some of the things he's learning about his family from them. There are still a good many surprises in store for Chase. Hopefully none of those surprises will end up killing him.
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Warship
Joshua Dalzelle
Sci-Fi · Hard Sci-Fi
In the 25th century, humanity’s long peace has left its warships outdated and its defenses complacent.

Warship
Joshua Dalzelle
Sci-Fi · Hard Sci-Fi · Military Sci-Fi · Space Exploration
Our take
In the 25th century, humanity’s long peace has left its warships outdated and its defenses complacent. When a terrifying new enemy emerges, Captain Jackson Wolfe and his aging vessel become the first and only line of resistance. Outmatched but unwilling to surrender, Wolfe must rally a civilization that has forgotten how to fight in Joshua Dalzelle’s gripping military sci-fi opener.
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About the book
2015 Goodreads Choice Award Nominee for Best Science Fiction
From Joshua Dalzelle, author of the bestselling "Omega Force” series, comes an all new vision of humanity's future.
In the 25th century humans have conquered space. The advent of faster-than-light travel has opened up hundreds of habitable planets for colonization, and humans have exploited the virtually limitless space and resources for hundreds of years with impunity.
So complacent have they become with the overabundance that armed conflict is a thing of the past, and their machines of war are obsolete and decrepit. What would happen if they were suddenly threatened by a terrifying new enemy? Would humanity fold and surrender, or would they return to their evolutionary roots and meet force with force? One ship—and one captain—will soon be faced with this very choice. Against incredible odds, Jackson Wolfe is determined to save humanity–and in the process, might end up saving himself.
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Terminal Alliance
Jim C. Hines
Post-Apocalyptic · Sci-Fi
When a bioweapon attack wipes out the command crew of the Pufferfish and reverts most humans aboard to a feral state, sanitation lieutenant Marion “Mops” Adamopoulos and her…

Terminal Alliance
Jim C. Hines
Post-Apocalyptic · Sci-Fi · Military Sci-Fi · Space Exploration · Space Opera
Our take
When a bioweapon attack wipes out the command crew of the Pufferfish and reverts most humans aboard to a feral state, sanitation lieutenant Marion “Mops” Adamopoulos and her team of space janitors are the only ones left thinking clearly. As they flee attackers, pilot a ship they barely understand, and hunt for a cure, they uncover a conspiracy threatening the entire alliance.
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About the book
A “damn hilarious” military science fiction series that “skates just on the right side of the line between clever absurdity and complete chaos”—for fans of Douglas Adams and John Scalzi (Ilona Andrews, #1 New York Times–bestselling author)
Hugo Award–winning author Jim C. Hines introduces the unlikely heroes who may just save the galaxy from a zombie plague: a crew of space janitors.
The Krakau came to Earth to invite humanity into a growing alliance of sentient species. However, they happened to arrive after a mutated plague wiped out half the planet, turned the rest into shambling, near-unstoppable animals, and basically destroyed human civilization. You know—your standard apocalypse.
Now, a century later, human beings might not be what they once were, but at least they’re no longer trying to eat everyone. Mostly.
Marion “Mops” Adamopoulos is surprisingly bright (for a human). As a Lieutenant on the Earth Mercenary Corps Ship Pufferfish, she’s in charge of the Shipboard Hygiene and Sanitation team. When a bioweapon attack wipes out the Krakau command crew and reverts the rest of the humans to their feral state, only Mops and her team are left with their minds intact.
Escaping the attacking aliens—not to mention her shambling crewmates—is only the beginning. Sure, Mops and her team of space janitors and plumbers can clean the ship as well as anyone, but flying the damn thing is another matter. As they struggle to keep the Pufferfish functioning and find a cure for their crew, they stumble onto a conspiracy that could threaten the entire alliance… a conspiracy born from the truth of what happened on Earth all those years ago.
With Terminal Alliance, Jim Jim C. Hines takes us into a brand-new universe of entertainment certain to appeal to fans of both Douglas Adams and Terry Pratchett.
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Corvus
Marko Kloos
Sci-Fi · Military Sci-Fi
Deployed to a lost colony world, soldier Alex Archer faces an alien enemy that has evolved into something far more lethal.

Corvus
Marko Kloos
Sci-Fi · Military Sci-Fi · Space Opera
Our take
Deployed to a lost colony world, soldier Alex Archer faces an alien enemy that has evolved into something far more lethal. What starts as a rescue mission becomes a brutal fight for survival light-years from home. This high-octane military science fiction sequel holds 4.7 stars on Amazon and is praised for its action and escalating stakes.
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About the book
When the aliens evolve, so does the threat against humanity in this thrilling sequel to Scorpio that finds Alex Archer in an epic battle of survival against the odds and the alien invaders.
Alex Archer is a soldier now, the only civilian survivor from Scorpio to join the NAC Defense Corps. With their training complete, Alex and her friend Private Isa Cressey find themselves on emergency combat deployment with their new unit. The destination is the Alpha Corvi system, where an allied warship has vanished. Alex can guess why.
Her fears prove true—Alpha Corvi is under new ownership. Alex must face the monsters from her childhood again as her regiment mounts a rescue operation to find and save the planet’s colonists. But this time, there is something terrifyingly different about their enemy. The Corps has evolved to meet the threat, but the Lankies have adapted as well—and they are more lethal than ever. What began as a rescue turns into a desperate fight for survival for Alex and her new friends, stranded on a hostile world forty-nine light-years from Earth. And the only way home goes right through the Lankies.
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Renegade Star
J.N. Chaney
Sci-Fi · Galactic Empire
Renegade captain Jace Hughes takes a job he can’t ignore when a mysterious nun and a strange young girl seek passage across the stars.

Renegade Star
J.N. Chaney
Sci-Fi · Galactic Empire · Military Sci-Fi · Space Exploration · Space Opera
Our take
Renegade captain Jace Hughes takes a job he can’t ignore when a mysterious nun and a strange young girl seek passage across the stars. Marked by glowing blue tattoos and hunted for a secret tied to humanity’s origins, the girl may unlock the path to the mythical Earth. As danger mounts, Jace must decide between profit and protection. A galaxy-spanning sci-fi adventure.
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About the book
They say the Earth is just a myth. But a bold secret will change everything.
Captain Jace Hughes is a Renegade, an expert at taking odd jobs without asking questions. But when a mysterious nun with a strange piece of cargo shows up at his door asking for safe passage, he has nothing but questions.
The nun is harboring a young girl with albino skin, white hair, and glowing blue tattoos. She's unlike anyone Jace has ever met.
And she just might hold the secret to finding Earth.
As they follow the clues, Jace and his bustling new crew go on the run, discovering the secrets of an ancient civilization that will unlock humanity's true origins.
With a hefty bounty on the child, will Jace take the payday or risk everything to protect her?
Renegade Star is the first installment in a riveting galaxy-spanning sci-fi series. If you're a fan of ancient civilizations, suspenseful space adventures, strange new worlds, and interstellar mysteries, you'll love this exciting sci-fi epic from USA Today bestseller J.N. Chaney, creator of the Backyard Starship Universe.
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Homeworld Lost
J.N. Chaney & Scott Moon
Sci-Fi · Galactic Empire
A test flight meant to make Major Noah Gantz a hero instead hurls him across the universe, where a sentient starship saves his life by merging with him.

Homeworld Lost
J.N. Chaney & Scott Moon
Sci-Fi · Galactic Empire · Military Sci-Fi · Space Opera
Our take
A test flight meant to make Major Noah Gantz a hero instead hurls him across the universe, where a sentient starship saves his life by merging with him. As Noah learns to survive with Kayan’s voice in his mind, a rising enemy hunts them—and knows Earth exists. A high-octane sci-fi adventure from J.N. Chaney and Scott Moon.
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About the book
During a test flight for the world’s first warp engine, Major Noah Gantz is set to go down in the history books.
Despite years of training, the mission goes sideways, and instead of a quick trip to the moon and back, Noah's ship is transported across the universe to stars unknown.
Stranded in space and on the brink of death, Noah is rescued by a sentient starship and its captain. To save his life, the ship’s own biomatter must replace his failing cells.
Now , Noah is different. Stronger, faster… and there’s a voice in his head.
The voice of the ship itself, and its name is Kayan.
With no way to return home, Noah must adapt and rebuild his life in this unfamiliar corner of the universe. And as he does, he discovers a looming threat in the far reaches of space, growing in power, and set on capturing Noah and his ship.
Worse still, this new enemy knows about Earth. . . and it has big plans.
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Darkside
Michael Mammay
Sci-Fi · Military Sci-Fi
Retired Colonel Carl Butler wants nothing more than quiet, but when a twelve-year-old girl begs him to find her missing father, he’s pulled back into the galaxy’s most…

Darkside
Michael Mammay
Sci-Fi · Military Sci-Fi · Space Exploration · Space Opera
Our take
Retired Colonel Carl Butler wants nothing more than quiet, but when a twelve-year-old girl begs him to find her missing father, he’s pulled back into the galaxy’s most dangerous politics. On a moon ruled by rival consortiums that have already tried to kill him, Butler uncovers disappearances tied to secrets buried in perpetual darkness. From acclaimed science fiction author Michael Mammay.
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About the book
In this thrilling, action-packed fourth installment in the Planetside series from acclaimed science fiction author Michael Mammay, retired Colonel Carl Butler gears up for another military investigation, full of danger, corporate intrigue, and tech people would kill for—perfect for fans of John Scalzi and Craig Alanson.
Colonel Butler has paid his dues and just wants to enjoy his retirement on a remote planet. But the galaxy has had other plans. He has been roped into searching for a politician’s missing son and an industry magnate’s missing daughter. He has been kidnapped, violated numerous laws, and caused the destruction of colonial facilities. He’s famous—or infamous, depending on who you ask—praised and reviled in equal measure across the galaxy for his exploits.
And he is determined to never let the government drag him into another investigation.
But when a runaway twelve-year-old girl whose father has gone missing asks him for help, well…it’s a lot harder to say no.
The girl’s father, Jorge Ramiro, was supposed to have been on Taug, a moon orbiting the gas giant Ridia 5, working on a dig with a famous archaeologist. But now there’s no sign of him and no record of him being there. Mining operations on the moon are run by two different consortiums, Caliber and Omicron—both of which have tried to kill Butler in the past. Butler doesn’t believe in coincidence.
Landing on Taug with his right-hand man Mac, computer genius Ganos, and an elite security squad, Butler soon finds that they’ve charged back into the crosshairs—because Ramiro is not the only who has disappeared, and the perpetual darkside of this moon is hiding more than the truth about a missing archeologist…
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