Way back in 2019, we hosted a poll in our Facebook Group and here on the blog to determine the Top 10 Military Sci-Fi Books and Series of All Time. In the intervening years, The Discover Sci-Fi community has grown by leaps and bounds, add to which there have been hundreds more military sci-fi books released. As such, we figured it was a great time to revisit and see if the titles that came out on top five years ago are still the fan favorites of today.

So over the last two weeks we once again polled our audience and received thousands of votes between the main poll here on the blog, and our supplementary poll over in the Discover Sci-Fi Facebook group.

Today, we are pleased to unveil the top 10 military sci-fi books and series as decided by your votes, ordered from 10 to 1. You may (or may not) be surprised to see there were indeed some changes, with half of the titles from the original list being replaced. 

Scroll on to check it out and please feel free to comment at the bottom of this post (or in our Facebook group) to let us know if you agree (or not!)

10. Dorsai! by Gordon R. Dickson

Donal Graeme set out to re-shape the galaxy, but first he must tear it apart. Donal Graeme, Dorsai of the Dorsai, was the final link in a long genetic train, the ultimate soldier, whose breadth of vision made him a master of space war and strategy - and something even greater. He was the focus of centuries of evolution, the culmination of planned development, and through him a new force made itself felt. Dorsai were renowned throughout the galaxy as the finest soldiers ever born, trained from birth to fight and win, no matter what the odds. With Donal at their head they embarked upon the final, impossible venture: they set out to unify the splintered worlds of Mankind.

Read Dorsai! here on Amazon. 

9. Hammer's Slammers by David Drake

With a veteran's eye for the harsh and gritty details of war, David Drake depicts a futuristic analog of tank combat in his Hammer's Slammers fiction. The Slammers are neither cartoon heroes nor propaganda villains; rather they are competent professionals engaged in a deadly business. The inevitable conflicts between policy, necessity, and human nature make Drake's Slammers fiction instantly identifiable and utterly compelling. This is the first of a three volume set presenting for the first time the entire genre-defining Slammers series in a uniform trade paperback set, with new introductions by major SF figures and new afterwords by David Drake. Each volume will also include a Slammers story not collected in previous Slammer's books.

Grab Hammer's Slammers here on Amazon.

8. The Lost Fleet by Jack Campbell

The Alliance has been fighting the Syndics for a century—and losing badly. Now its fleet is crippled and stranded in enemy territory. Their only hope is a man who's emerged from a century-long hibernation to find he has been heroically idealized beyond belief....

Captain John “Black Jack” Geary’s exploits are known to every schoolchild. Revered for his heroic “last stand” in the early days of the war, he was presumed dead. But a century later, Geary miraculously returns and reluctantly takes command of the Alliance Fleet as it faces annihilation by the Syndics.

Appalled by the hero-worship around him, Geary is nevertheless a man who will do his duty. And he knows that bringing the stolen Syndic hypernet key safely home is the Alliance’s one chance to win the war. But to do that, Geary will have to live up to the impossibly heroic “Black Jack” legend....

Get your copy of The Lost Fleet: Dauntless here on Amazon. Also available on audiobook.

7. The Mote in God's Eye by Larry Niven and Jerry Pournelle

Read The Mote in God's Eye here on Amazon. Also available on audiobook.

6. Dune by Frank Herbert

Frank Herbert’s classic masterpiece—a triumph of the imagination and one of the bestselling science fiction novels of all time.

Set on the desert planet Arrakis, Dune is the story of Paul Atreides—who would become known as Muad'Dib—and of a great family's ambition to bring to fruition mankind's most ancient and unattainable dream.

A stunning blend of adventure and mysticism, environmentalism and politics, Dune won the first Nebula Award, shared the Hugo Award, and formed the basis of what is undoubtedly the grandest epic in science fiction.

 Grab Dune here on Amazon. Also available on audiobook.

5. The Forever War by Joe Haldeman  

Winner of the Hugo and Nebula Awards: A futuristic masterpiece, “perhaps the most important war novel written since Vietnam” (Junot Díaz).
 
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.
 
Based in part on the author’s experiences in Vietnam, The Forever War 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. It 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”

Get your copy of The Forever War here on Amazon. Also available on audiobook.

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4. Old Man's War by John Scalzi 

John Perry did two things on his 75th birthday. First he visited his wife's grave. Then he joined the army.

The good news is that humanity finally made it into interstellar space. The bad news is that planets fit to live on are scarce-and aliens willing to fight for them are common. The universe, it turns out, is a hostile place.

So: we fight. To defend Earth (a target for our new enemies, should we let them get close enough) and to stake our own claim to planetary real estate. Far from Earth, the war has gone on for decades: brutal, bloody, unyielding.

Earth itself is a backwater. The bulk of humanity's resources are in the hands of the Colonial Defense Force, which shields the home planet from too much knowledge of the situation. What's known to everybody is that when you reach retirement age, you can join the CDF. They don't want young people; they want people who carry the knowledge and skills of decades of living. You'll be taken off Earth and never allowed to return. You'll serve your time at the front. And if you survive, you'll be given a generous homestead stake of your own, on one of our hard-won colony planets.

John Perry is taking that deal. He has only the vaguest idea what to expect. Because the actual fight, light-years from home, is far, far harder than he can imagine-and what he will become is far stranger.

Grab Old Man's War here on Amazon. Also available on audiobook.

3. Ender's Game bu Orson Scott Card

In order to develop a secure defense against a hostile alien race's next attack, government agencies breed child geniuses and train them as soldiers. A brilliant young boy, Andrew "Ender" Wiggin lives with his kind but distant parents, his sadistic brother Peter, and the person he loves more than anyone else, his sister Valentine. Peter and Valentine were candidates for the soldier-training program but didn't make the cut—young Ender is the Wiggin drafted to the orbiting Battle School for rigorous military training.

Ender's skills make him a leader in school and respected in the Battle Room, where children play at mock battles in zero gravity. Yet growing up in an artificial community of young soldiers Ender suffers greatly from isolation, rivalry from his peers, pressure from the adult teachers, and an unsettling fear of the alien invaders. His psychological battles include loneliness, fear that he is becoming like the cruel brother he remembers, and fanning the flames of devotion to his beloved sister.

Is Ender the general Earth needs? But Ender is not the only result of the genetic experiments. The war with the Buggers has been raging for a hundred years, and the quest for the perfect general has been underway for almost as long. Ender's two older siblings are every bit as unusual as he is, but in very different ways. Between the three of them lie the abilities to remake a world. If, that is, the world survives.

Ender's Game is the winner of the 1985 Nebula Award for Best Novel and the 1986 Hugo Award for Best Novel.

Dive into Ender's Game here on Amazon. Also available on audiobook.

2. Honor Harrington Series by David Weber

Having made him look a fool, she's been exiled to Basilisk Station in disgrace and set up for ruin by a superior who hates her.

Her demoralized crew blames her for their ship's humiliating posting to an out-of-the-way picket station.

The aborigines of the system's only habitable planet are smoking homicide-inducing hallucinogens.

Parliament isn't sure it wants to keep the place; the major local industry is smuggling; the merchant cartels want her head; the star-conquering, so-called "Republic" of Haven is Up To Something; and Honor Harrington has a single, over-age light cruiser with an armament that doesn't work to police the entire star system.

But the people out to get her have made one mistake. They've made her mad.

Get your copy of book 1 in the Honor Harrington series, On Basilisk Station, here on Amazon. Also available on audiobook.

1. Starship Trooper by Robert A. Heinlein

In Robert A. Heinlein’s controversial Hugo Award-winning bestseller, a recruit of the future goes through the toughest boot camp in the Universe—and into battle against mankind’s most alarming enemy...

Johnnie Rico never really intended to join up—and definitely not the infantry. But now that he’s in the thick of it, trying to get through combat training harder than anything he could have imagined, he knows everyone in his unit is one bad move away from buying the farm in the interstellar war the Terran Federation is waging against the Arachnids.

Because everyone in the Mobile Infantry fights. And if the training doesn’t kill you, the Bugs are more than ready to finish the job...

Get your copy of Starship Troopers
here on Amazon. Also available on audiobook.

Now... Let's hear your opinions! Do you agree with the ranking here, or do you feel as though your most-loved military sci-fi book or series is missing or didn't place as high as you think it deserved to? Feel free to let us know in the comments here, or join us in our Discover Sci-Fi Facebook Group to chime in on this matter and on all else sci-fi related! 

*All book-related copy in this post was pulled from Amazon, Goodreads & Wikipedia, unless otherwise credited.

“The noblest fate that a man can endure is to place his own mortal body between his loved home and the war’s desolation.” — Robert A. Heinlein, Starship Troopers

If you're a military sci-fi fan who especially loves those books that aim to give a realistic sense of military life and action, you're going to want to add these books to your queue. Or—for those well-worn favorites—tee them up for a re-read!

A few of the writers with books featured this week have even served in the military themselves, and as such are combining their writing chops with first-hand experience; all of the authors featured are incredible story tellers, and so you are sure to find something here that will have you utterly enthralled! 

Starship Troopers by Robert A. Heinlein

In Robert A. Heinlein’s controversial Hugo Award-winning bestseller, a recruit of the future goes through the toughest boot camp in the Universe—and into battle against mankind’s most alarming enemy...

Johnnie Rico never really intended to join up—and definitely not the infantry. But now that he’s in the thick of it, trying to get through combat training harder than anything he could have imagined, he knows everyone in his unit is one bad move away from buying the farm in the interstellar war the Terran Federation is waging against the Arachnids.

Because everyone in the Mobile Infantry fights. And if the training doesn’t kill you, the Bugs are more than ready to finish the job...

Read Starship Troopers here on Amazon. Also available on audiobook.

The Forever War by Joe Haldeman

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.

Based in part on the author’s experiences in Vietnam, The Forever War 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. It 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).

Pick up The Forever War here on Amazon. Also available on audiobook.

Trading in Danger (Vatta's War Book 1) by Elizabeth Moon

Kylara Vatta is the only daughter in a family full of sons, and her father’s only child to buck tradition by choosing a military career instead of joining the family business. For Ky, it’s no contest: Even running the prestigious Vatta Transport Ltd. shipping concern can’t hold a candle to shipping out as an officer aboard an interstellar cruiser. It’s adventure, not commerce, that stirs her soul. And despite her family’s misgivings, there can be no doubt that a Vatta in the service will prove a valuable asset. But with a single error in judgment, it all comes crumbling down.

Expelled from the Academy in disgrace–and returning home to her humiliated family, a storm of high-profile media coverage, and the gaping void of her own future–Ky is ready to face the inevitable onslaught of anger, disappointment, even pity. But soon after opportunity’s door slams shut, Ky finds herself with a ticket to ride– and a shot at redemption–as captain of a Vatta Transport ship.

It’s a simple assignment: escorting one of the Vatta fleet’s oldest ships on its final voyage . . . to the scrapyard. But keeping it simple has never been Ky’s style. And even though her father has provided a crew of seasoned veterans to baby-sit the fledgling captain on her maiden milk run, they can’t stop Ky from turning the routine mission into a risky venture–in the name of turning a profit for Vatta Transport, of course.

By snapping up a lucrative delivery contract defaulted on by a rival company, and using part of the proceeds to upgrade her condemned vehicle, Ky aims to prove she’s got more going for her than just her family’s famous name. But business will soon have to take a backseat to bravery, when Ky’s change of plans sails her and the crew straight into the middle of a colonial war. For all her commercial savvy, it’s her military training and born-soldier’s instincts that Ky will need to call on in the face of deadly combat, dangerous mercenaries, and violent mutiny. .

Get your copy of Trading in Danger  here on Amazon. Also available on audiobook.

City of Pearl by Karen Traviss

Three separate alien societies have claimson Cavanagh's Star. But the new arrivals -- the gethes from Earth -- now threaten thetenuous balance of a coveted world.

Environmental Hazard Enforcement officer Shan Frankland agreed to lead a mission to Cavanagh's Star, knowing that 150 years would elapse before she could finally return home. But her landing, with a small group of scientists and Marines, has not gone unnoticed by Aras, the planet's designated guardian. An eternally evolving world himself, this sad, powerful being has already obliterated millions of alien interlopers and their great cities to protect the fragile native population. Now Shan and her party -- plus the small colony of fundamentalist humans who preceded them -- could face a similar annihilation . . . or a fate far worse. Because Aras possesses a secret of the blood that would be disastrous if it fell into human hands -- if the gethes survive the impending war their coming has inadvertently hastened.

Read City of Pearl here on Amazon. 

Old Man's War by John Scalzi

Grab Old Man's War here on Amazon. Also available on audiobook.

Like what you're reading?

If you're enjoying this list of military sci-fi reads that nail the military, why not join the DSF community for more awesome content? You'll get to be notified whenever a top 10 list or any other articles of interest go up on our site. It's free to sign up and you'll also get recommendations for new releases and discounted ebooks from our expert editorial team, from bestsellers to hidden gems.

The Risen Empire by Scott Westerfeld

The undead Emperor has ruled his mighty interstellar empire of eighty human worlds for sixteen hundred years. Because he can grant a form of eternal life, creating an elite known as the Risen, his power has been absolute. He and his sister, the Child Empress, who is eternally a little girl, are worshiped as living gods. No one can touch them.

Not until the Rix, machine-augmented humans who worship very different gods: AI compound minds of planetary extent. The Rix are cool, relentless fanatics, and their only goal is to propagate such AIs throughout the galaxy. They seek to end, by any means necessary, the Emperor's prolonged tyranny of one and supplant it with an eternal cybernetic dynasty of their own. They begin by taking the Child Empress hostage. Captain Laurent Zai of the Imperial Frigate Lynx is tasked with her rescue.

Separated by light-years, bound by an unlikely love, Zai and pacifist senator Nara Oxham must each in their own way, face the challenge of the Rix, and they each will hold the fate of the empire in their hands. The Risen Empire is the first great space opera of the twenty-first century.

Get your copy of The Risen Empire  here on Amazon. 

Terms of Enlistment by Marko Kloos

The year is 2108, and the North American Commonwealth is bursting at the seams. For welfare rats like Andrew Grayson, there are only two ways out of the crime-ridden and filthy welfare tenements: You can hope to win the lottery and draw a ticket on a colony ship settling off-world . . . or you can join the service.

With the colony lottery a pipe dream, Andrew chooses to enlist in the armed forces for a shot at real food, a retirement bonus, and maybe a ticket off Earth. But as he starts a career of supposed privilege, he soon learns that the good food and decent health care come at a steep price . . . and that the settled galaxy holds far greater dangers than military bureaucrats or the gangs that rule the slums.

The debut novel from Marko Kloos, Terms of Enlistment is an addition to the great military sci-fi tradition of Robert Heinlein, Joe Haldeman, and John Scalzi.

Dive into Terms of Enlistment here on Amazon. Also available on audiobook.

Marines (Crimson Worlds Book 1) by Jay Allan

Erik Cain joined the Marines to get off death row. The deal was simple; enlist to fight in space and he would be pardoned for all his crimes.

In the 23rd Century, assault troops go to war wearing AI-assisted, nuclear-powered armor, but it is still warriors and blood that win battles. From one brutal campaign to the next, Erik and his comrades fight an increasingly desperate war over the resource rich colony worlds that have become vital to the economies of Earth's exhausted and despotic Superpowers.

Erik rises through the ranks and becomes a deadly warrior, and he finally finds a home, first with the Marines who fight at his side and later among the colonists - men and women who have dared to leave everything behind to build a new society on the frontier, one where the freedoms and rights lost long ago on Earth are preserved.

But causes can be fleeting and loyalties complex. Amidst the blood and death and sacrifice, Erik begins to wonder. Is he fighting the right war? And who is the real enemy?

Get your copy of Marines here on Amazon. Also available on audiobook.

Star Shroud by Ken Lozito

They’ve been watching us for hundreds of years.
Now they need our help.
Earth is not safe.

Zack is good at finding things, but when he discovers a global conspiracy, life as he knows it is over. Sometimes the truth doesn’t set you free. It traps you instead.

Kept secret for 60 years, the discovery of an alien signal forces an unlikely team to investigate a mysterious structure discovered in the furthest reaches of the solar system. Join the crew of the Athena, Earth’s most advanced spaceship on the ultimate journey beyond our wildest imagining.

Strap yourself in. The Star Shroud is the first book in this action-packed space opera series. Readers describe them as “a cross between David Weber and John Ringo.” If you like space opera adventure stories with clever heroes, impossible situations, and chilling discoveries, then you’re in for a fun nonstop thrill ride. Read it now!

Start reading Star Shroud  here on Amazon. Also available on audiobook.

Warship (Black Fleet Trilogy Book 1) by Joshua Dalzelle

Grab Warship here on Amazon. Also available on audiobook.

Have you read any of these incredible military sci-fi reads? Which ones will make their way into your (e)bookshelf or into your ears? Have one you feel really nails it that didn't appear on our list? Give it a shout out in the comments here, or over in the Discover Sci-Fi Facebook group! 

*All book-related copy in this post was pulled from Amazon, Goodreads & Wikipedia, unless otherwise credited.