Books like 'Onslaught'
Readers who enjoyed Onslaught by Ivan Kal also liked the following books featuring the same tropes, story themes, relationship dynamics and character types.
sc-fi space military, war & conflict space-opera war military aliens litrpg space-travel royalty
-
No Retreat by J.N. Chaney, Terry Mixon
Rated: 4.50 of 5 stars · 12 ratingsWhen things are going to plan, check to see what you’re missing.Admiral Jack Romanoff and his crew are trapped inside the Confederation proper and facing an unknown number of alien attack ships. They’d thought the Tardan military was defeated, but they’d been wrong. Now they were trapped in a fight they couldn’t lose.When everything seems exactly as you’d hoped, figure out what you’ve missed...Categorized as:
space-opera military aliens invasion space-travel exploration space-fleet galactic-empire -
![Under Siege by J.N. Chaney, Terry Mixon]()
Under Siege by J.N. Chaney, Terry Mixon
Rated: 4.50 of 5 stars · 12 ratingsOnly one world in the cluster remains in enemy hands.Admiral Jack Romanoff and his crew have one remaining nut to crack before they can turn their attention to the people that overthrew the Confederation. The Vesuvius system has become a fortress, so it won’t be an easy fight, but it is one they cannot lose and survive.When force alone won’t do the trick, add guile...Categorized as:
military space-opera aliens invasion space-travel exploration space-fleet galactic-empire -
![Clone World by B.V. Larson]()
Clone World by B.V. Larson
Rated: 4.50 of 5 stars · 24 ratingsJames 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...Categorized as:
aliens colonization exploration galactic-empire invasion military space-fleet space-opera -
![Ice World by B.V. Larson]()
Ice World by B.V. Larson
Rated: 4.55 of 5 stars · 20 ratingsLong 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...Categorized as:
aliens colonization exploration galactic-empire invasion military space-fleet space-opera -
-
![The Price of Liberty by D.J. Holmes]()
The Price of Liberty by D.J. Holmes
Rated: 4.50 of 5 stars · 10 ratingsWar has been declared. The Indian Star Republic has landed ground troops on the newly discovered colony of Haven as they seek to seize access to the alien worlds of Vestar and Kulthar. The British Star Kingdom has reacted. A battle fleet has been formed with orders to drive off the Indians and retake Haven...Categorized as:
colonization exploration galactic-empire military space-fleet space-opera space-travel war -
![The Forever War by Raymond L. Weil]()
The Forever War by Raymond L. Weil
Rated: 4.50 of 5 stars · 10 ratingsFrom USA Today Best Selling Author Raymond L. Weil comes the fourth book in the Star Cross series. The Vorn have returned with a massive fleet and are once more harvesting the intelligent worlds of the galaxy for food. Every fleet placed in front of them has been annihilated by the Vorn’s superior weapons. The Vorn seem unstoppable as they harvest world after world... -
![Galaxy in Peril by Raymond L. Weil]()
Galaxy in Peril by Raymond L. Weil
Rated: 4.50 of 5 stars · 10 ratingshe situation in the galaxy is growing desperate. Every day the Vorn are harvesting world after world to be used as food for their Queens. The Vorn ships are nearly indestructible and destroying every fleet that dares to oppose them.Lakiam Fleet Commodore Dreen is trying to form an alliance to try to stop the Vorn, but he needs a victory to bring other Protector Worlds to his side... -
![Edge World by B.V. Larson]()
Edge World by B.V. Larson
Rated: 4.48 of 5 stars · 23 ratingsA 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 Lost Supernova by Vaughn Heppner]()
The Lost Supernova by Vaughn Heppner
Rated: 4.42 of 5 stars · 12 ratingsAndroids used to mingle among us, pretending to be human. Then an alien puppet-master altered their programming. Unknown to us, androids began leaving human society, burning their clothes and peeling off their skin to reveal the chrome-colored bodies underneath. They gathered in a system were a star had exploded, blowing away the atmosphere of a Jupiter-like planet...Categorized as:
aliens colonization exploration galactic-empire invasion military space-fleet space-opera -
![Earth Ascendant by Raymond L. Weil]()
Earth Ascendant by Raymond L. Weil
Rated: 4.42 of 5 stars · 12 ratingsFrom USA Today Bestselling Author Raymond L. Weil comes the second book in a new military science fiction series.The war between the seven alien races of the Confederation and Earth heats up as the two come into direct conflict over the former Human Empire. The people or Earth are determined to free it, and the Confederation is determined to keep it under their strict control...Categorized as:
aliens colonization exploration galactic-empire invasion military space-fleet space-opera -
![Artifice by S.H. Jucha]()
Artifice by S.H. Jucha
Rated: 4.42 of 5 stars · 12 ratingsThe great spheres and probes of Artifice, humankind’s enemy, haunt every inhabited world near and far. The Omnians’ long and arduous search for Artifice has ended. They’ve located Artifice’s lair in the Talus system. The sentient digital entity rules a vast swath of worlds, known as the federacy, through ruthless intimidation... -
![The Lost Earth by Vaughn Heppner]()
The Lost Earth by Vaughn Heppner
Rated: 4.36 of 5 stars · 14 ratingsIt finally happened. Commander Thrax Ti Ix created a hyper-spatial tube for the Swarm Imperium. Across thousands of light-years, a vast armada of warships is heading for Earth to burn the homeworld down to its bedrock as the Swarm begins its genocidal campaign against the human race. No one—not the New Men, the Spacers, the Wahhabi Caliphate or Star Watch—has faced such staggering odds... -
![Empire's Gambit by D.J. Holmes]()
Empire's Gambit by D.J. Holmes
Rated: 4.67 of 5 stars · 6 ratingsThe Karacknid assault on Earth has been turned back at great cost to both sides. Only the intervention of the Kulreans saved Humanity’s homeworld from certain destruction. Yet the Kulrean worldships cannot be used for offensive operations. This means Humanity and her allies have only a few months of respite before the Karacknids can make good their losses...Categorized as:
colonization exploration galactic-empire military space-fleet space-opera space-travel adult -
![Indomitable by Jonathan Brazee]()
Indomitable by Jonathan Brazee
Rated: 4.67 of 5 stars · 6 ratingsBeth “Fire Ant” Dalisay is the Navy’s top ace. But the alien Crystals really don’t care. They intend on wiping out humanity no matter who stands in their way. Pulled from her Wasp fighter, the Navy assigns Beth as a scout pilot with a mission to find the Crystal’s home world... -
-
![Raven's Flag by Glynn Stewart]()
Raven's Flag by Glynn Stewart
Rated: 4.57 of 5 stars · 7 ratingsIn times of peace, alliances wither and are forgotten.In times of war, honor must reforge them in fire and steel!The United Planets Alliance fought the Kenmiri Empire with a hundred allies at their side. Bound in common cause until genocide broke the Kenmiri—and Kenmiri schemes broke the alliance in turn—those one-time allies still left deep debts of blood and friendship behind...Categorized as:
military aliens exploration space-opera invasion galactic-empire colonization space-fleet -
![Explorations by Raymond L. Weil]()
Explorations by Raymond L. Weil
Rated: 4.50 of 5 stars · 8 ratingsDisaster has struck the Human Federation of Worlds. The Eternals have finally found Earth and are preparing to destroy it and the rest of the Federation. They begin gathering a massive fleet to overwhelm and destroy all of the Human worlds...Categorized as:
aliens colonization exploration galactic-empire invasion military space-fleet space-opera -
![Paying the Price by Terry Mixon]()
Paying the Price by Terry Mixon
Rated: 4.40 of 5 stars · 10 ratingsNo good deed goes unpunished… Admiral Jared Mertz and Princess Kelsey Bandar saved billions of lives and staved off an invasion of the Terran Empire, but not everyone is cheering their success. Their triumphant return sets off a chain of events that threaten not only their lives, but everyone they hold dear... -
![Survivors by Toby Neighbors]()
Survivors by Toby Neighbors
Rated: 4.40 of 5 stars · 10 ratingsNothing in the Corps is guaranteed!Staff Sergeant Eli Vanhorn isn’t the man he used to be. Once a proud member of the Fleet Marine Corps’ elite Terrestrial Advance Combat teams, the battle on colony planet Luyten C left him broken and scarred. But after a year of surgeries and physical therapy, he’s ready to complete his enlistment as Master of Arms on the exploration vessel Rihla...Categorized as:
aliens colonization exploration galactic-empire military space-fleet space-travel war -
![Crusade by Glynn Stewart]()
Crusade by Glynn Stewart
Rated: 4.40 of 5 stars · 10 ratingsA newborn Alliance, forged to stop the destroyers of worldsA potential ally, with secrets hidden by a thousand liesA long-doomed star, whose ruins hold a vital answer... -
![Galactar by Anthony James]()
Galactar by Anthony James
Rated: 4.40 of 5 stars · 10 ratingsFollowing decades of war and the recent catastrophic loss of an entire planet, the Human Planetary Alliance is riven by internal disputes and rivalries. The military’s old guard fights for power against those who see a chance to turn things around.After a series of hard-fought victories, Captain Carl Recker is becoming recognized as a man who gets results - a man who knows how to beat the Daklan...Categorized as:
aliens exploration galactic-empire invasion military space-fleet space-opera space-travel -
![Genesis by Raymond L. Weil]()
Genesis by Raymond L. Weil
Rated: 4.40 of 5 stars · 10 ratingsFleet Admiral Jeremy Strong is determined to preserve the planet Gaia as the new home of the lost fleets. Unfortunately, a new and frightening danger from the destroyed Dyson Sphere threatens to undo everything he has fought for. Kazak, the AI on the Originator ship has his own agenda. The Humans and Altons will either do as he demands or he will destroy them...Categorized as:
aliens colonization exploration galactic-empire invasion military space-fleet space-opera -
![Fulcrum Gun by Anthony James]()
Fulcrum Gun by Anthony James
Rated: 4.40 of 5 stars · 10 ratingsLost in hostile space and pursued by the most powerful warship in the known universe, Captain Carl Recker is losing hope and running out of options. His battleship Fulcrum is no match for this enemy and the Meklon aliens who might have helped him are dead, killed by the Galactar’s murderous weaponry.Somehow, Recker must find a way to succeed where the might of an alien empire already failed...Categorized as:
aliens exploration galactic-empire invasion military space-fleet space-opera space-travel -
![Universe in Danger by Raymond L. Weil]()
Universe in Danger by Raymond L. Weil
Rated: 4.40 of 5 stars · 10 ratingsThe Lost Fleets have settled on an Originator Dyson Sphere in preparation for their greatest test yet. A great enemy is spreading across the universe conquering galaxy after galaxy.The few surviving Originators have asked Fleet Admiral Jeremy Strong to fight a war against their most hated enemy, the Anti-Life. If he fails to stop their advance, then the entire universe could be in danger... -
![Winds of Vengeance by Jay Allan]()
Winds of Vengeance by Jay Allan
Rated: 4.40 of 5 stars · 10 ratingsEarth Two. A new home for the survivors of the fleet, the men and women who battled against seemingly insurmountable odds to survive the assault of the First Imperium and to destroy the homicidal Regent, the artificial intelligence committed to their destruction... -
-
![Laws of Ancidium by Anthony James]()
Laws of Ancidium by Anthony James
Rated: 4.40 of 5 stars · 10 ratingsHaving fought his hardest battle, Captain Carl Recker returns to planet Lustre, bringing the alien battleship Fulcrum with him.Recker is under no illusions that he’ll be offered backdated shore leave, but his feet don’t even touch the ground before trouble shows up. A heavily armed fifty-thousand-metre Meklon interstellar drops out of lightspeed near the planet...Categorized as:
aliens exploration galactic-empire invasion military space-fleet space-opera space-travel -
![Search for the Lost by Raymond L. Weil]()
Search for the Lost by Raymond L. Weil
Rated: 4.40 of 5 stars · 10 ratingsFrom USA Today Best Selling Author Raymond L. Weil comes the second book in the Originator Wars series. The Eternals have decided to conquer Originator space. All that stands between them are the Originator AIs and the Humans, or at least that is what the Eternals believe. In preparation for the invasion, they begin gathering their massive warfleet...Categorized as:
aliens colonization exploration galactic-empire invasion military space-fleet space-opera -
![The Dark Invaders by Raymond L. Weil]()
The Dark Invaders by Raymond L. Weil
Rated: 4.40 of 5 stars · 10 ratingsFrom USA Today Best Selling Author Raymond L. Weil comes the second book in the Star Cross series. Over fourteen months have passed since Fleet Admiral Kurt Vickers drove the Profiteers from Earth. Eighty million people died while the planet was being ransacked and its wealth stolen. Now a new and deadlier threat comes from intergalactic space...Categorized as:
aliens colonization exploration galactic-empire invasion military space-fleet space-opera -
![Shell Game by J.N. Chaney, Terry Mixon]()
Shell Game by J.N. Chaney, Terry Mixon
Rated: 4.40 of 5 stars · 10 ratingsIf you can't hide the game, conceal the pieces. Admiral Jack Romanoff and his people have located the system the Tardans are using as their command post for the invasion of the Confederation. Only they can't simply attack militarily because of the stellar terrain, so they need to improvise. When the stakes are high, leave no option unexplored...Categorized as:
space-opera military aliens invasion space-travel exploration space-fleet galactic-empire -
![Lightning Strike by J.N. Chaney, Terry Mixon]()
Lightning Strike by J.N. Chaney, Terry Mixon
Rated: 4.40 of 5 stars · 10 ratingsIn combat, speed is life.Admiral Jack Romanoff and his people have seized control of Faust and now have a base of operations, though the people of that world aren't completely pleased by his presence or actions. That's okay because he doesn't have time to worry about them. He needs to strike the Locusts before they spread even more than they already have in the wreck everything humanity has built...Categorized as:
space-opera military aliens invasion space-travel exploration space-fleet galactic-empire -
![It Ain't Over... by Robert M. Kerns]()
It Ain't Over... by Robert M. Kerns
Rated: 4.43 of 5 stars · 21 ratingsBuy a planet and disappear...That's all Cole wanted.He spent thirteen years hiding on the fringes of society, piloting freighters for criminals and building a stash to do just that.But life happens when you're busy making plans.When Cole chooses to save an ejected castaway and stumbles into a crew of his own, he starts down a path that will force him to choose...Categorized as:
ai aliens colonization galactic-empire military space-fleet space-opera space-travel -
![Dark World by B.V. Larson]()
Dark World by B.V. Larson
Rated: 4.35 of 5 stars · 27 ratingsTwo 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 disputed region, a rival power has begun to move. They're stealing our planets, one at a time...Categorized as:
aliens colonization exploration galactic-empire invasion military space-fleet space-opera -
![Direct Fire by Rick Partlow]()
Direct Fire by Rick Partlow
Rated: 4.41 of 5 stars · 21 ratingsFrom street criminal to war hero.From outcast to Marine officer.The journey has been a long one, but now it’s reaching the end.Cam Alvarez leads his platoon of Drop-Troopers into the Tahni Imperium, into the final days of the war and the bloodiest battles yet...Categorized as:
aliens colonization exploration galactic-empire invasion military space-fleet space-opera -
![Exile by Glynn Stewart]()
Exile by Glynn Stewart
Rated: 4.31 of 5 stars · 13 ratingsA shackled Earth, ruled by an unstoppable tyrantAn exiled son, and a one-way trip across the galaxyA perfect world, their last hope for survivalVice Admiral Isaac Gallant is the heir apparent to the First Admiral, the dictator of the Confederacy of Humanity. Unwilling to let his mother's tyranny stand, he joins the rebellion and leads his ships into war against the might of his own nation... -
![The White Fleet by Jay Allan, Jeffrey Kafer]()
The White Fleet by Jay Allan, Jeffrey Kafer
Rated: 4.29 of 5 stars · 14 ratingsThe war is over, but the struggle continues. Tyler Barron and his spacers have set out into the unknown, deep into the Badlands, seeking to discover the empire's old tech and the secrets of its tortured history before Gaston Villieneuve and the resurgent Union can beat them to it. The White Fleet is a vast force, powerful, and crewed by the toughest veterans from the war... -
-
![The Lost Colony by Vaughn Heppner]()
The Lost Colony by Vaughn Heppner
Rated: 4.25 of 5 stars · 16 ratingsWe fought the invading New Men to a standstill and defeated the alien Destroyer sent to obliterate Earth. The worst should be over, but it’s not. Perfect android replicas are impersonating high-level officials so trust is failing. Worse, the New Men have found allies with an impenetrable stealth technology. This time, however, Earth is going on the offensive... -
![The Others by Jay Allan]()
The Others by Jay Allan
Rated: 4.46 of 5 stars · 17 ratingsFrom the deepest darks of unknown space, evil comes… Admiral Tyler Barron and the Confederation navy face a new threat, darker and deadlier than any that have come before...Categorized as:
aliens colonization exploration galactic-empire invasion military space-fleet space-opera -
![Storm World by B.V. Larson]()
Storm World by B.V. Larson
Rated: 4.35 of 5 stars · 23 ratingsJames 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...Categorized as:
aliens colonization exploration galactic-empire invasion military space-fleet space-opera -
![Conquest by Ivan Kal]()
Conquest by Ivan Kal
Rated: 4.50 of 5 stars · 6 ratingsThe conquest of the Erasi has begun and fleets clash over Erasi worlds. But while the alliance of the Shara Daim, Empire, and Krashinar has an advantage, the war is far from won. The Erasi industrial capacity as well as their population and size make it hard to conquer and harder to hold... -
![Crystals by Jonathan P. Brazee]()
Crystals by Jonathan P. Brazee
Rated: 4.50 of 5 stars · 6 ratingsWar with the aliens has broken out, and they seem to have all the advantages. Engineers and scientists are scrambling to develop weapons to stand up to the threat, but when all is said and done, it is the Navy fighter pilots who have to take the fight to the enemy... -
![Star Force: Temple Wars by Aer-ki Jyr]()
Star Force: Temple Wars by Aer-ki Jyr
Rated: 4.50 of 5 stars · 6 ratingshe bell has been rung, and the Return of the Reignor has come...Categorized as:
aliens colonization exploration galactic-empire invasion military space-fleet space-opera -
![Hell's Reach by David VanDyke, B.V. Larson]()
Hell's Reach by David VanDyke, B.V. Larson
Rated: 4.50 of 5 stars · 6 ratingsUSA Today bestseller B.V. Larson and Dragon award finalist David VanDyke have released book six in their epic military space opera! The Breakers find a new home among the stars: Utopia. An engineered planet that is vast beyond comprehension with plenty of room to grow. They set up trade routes and work as mercenaries for their supplies… but trouble lurks. Pirates strike their merchant lanes...Categorized as:
aliens colonization exploration galactic-empire invasion military space-fleet space-opera -
![Enemies & Allies by Rick Partlow]()
Enemies & Allies by Rick Partlow
Rated: 4.50 of 5 stars · 6 ratingsThe war is over and Andy Clanton is ready to live happily ever after.Space Force has other ideas.Recruited to follow the last signal of the mysterious Elders to a system halfway across the galaxy, Andy joins the crew of the James Bowie for another adventure into the unknown...Categorized as:
aliens colonization exploration galactic-empire invasion military space-fleet space-opera -
![The Line of Duty by Rick Partlow]()
The Line of Duty by Rick Partlow
Rated: 4.50 of 5 stars · 6 ratingsDanger stalks the Republic once again. Raiders hijack their starships, biological weapons slaughter their colonists, and terrorists kill thousands of innocents in their mega-cities…and as the head of Fleet Intelligence, it’s Jason McKay’s job to track down the enemy, whether they’re on a world at the edge of known space or in the midst of a corrupt government...Categorized as:
aliens colonization exploration galactic-empire invasion military space-fleet space-travel -
![Star Force: Phoenix by Aer-ki Jyr]()
Star Force: Phoenix by Aer-ki Jyr
Rated: 4.50 of 5 stars · 6 ratingsCal-com's journey is not at an end. In fact, it's just beginning..Categorized as:
aliens colonization exploration galactic-empire invasion military space-fleet space-opera -
-
![Ace by Jonathan Brazee]()
Ace by Jonathan Brazee
Rated: 4.50 of 5 stars · 6 ratingsAlien Crystals don't recognize human boundaries. The Navy of Humankind has to hold them back. Small fighters in the vastness of space. Joint Task Force Iron Shield stands ready. Too small to defend everywhere, they need intel so they can go on the attack. Maximize their firepower. Maximize their impact. The Crystals do not know fear. They are coming for what they want... -
![Star Force: The Powers That Be by Aer-ki Jyr]()
Star Force: The Powers That Be by Aer-ki Jyr
Rated: 4.50 of 5 stars · 6 ratingsIn youth you'd lay awake at night and scheme..Categorized as:
aliens colonization exploration galactic-empire invasion military space-fleet space-opera -
![Scum of the Universe by Anthony James]()
Scum of the Universe by Anthony James
Rated: 4.50 of 5 stars · 6 ratingsSometimes you give it everything and it’s not enough. The Ragger and Sekar aliens have pushed humanity to the brink of annihilation. Two hopes for survival – genetic modifications to protect against the Sekar, and the death pulse generator – are years from completion...Categorized as:
aliens exploration galactic-empire invasion military space-fleet space-opera space-travel -
![Imperial Command by D.J. Holmes]()
Imperial Command by D.J. Holmes
Rated: 4.63 of 5 stars · 11 ratingsTrapped behind enemy lines, the survivors of the raid on Jaranna have been forced to flee deeper into enemy territory. Behind them Karacknid fleets gather to exact revenge. With danger at every turn, Admiral Lightfoot must find a way to get his ships home or Earth will be left defenceless.On Earth the Empire has been formed and is bringing the outlying colonies into its fold...Categorized as:
aliens colonization exploration galactic-empire invasion military space-fleet space-opera -
![Judgment Day by Rick Partlow]()
Judgment Day by Rick Partlow
Rated: 4.54 of 5 stars · 13 ratingsWe’ve won a battle…but we’re losing the war.Travis Miller, his image reformed from the moron who screwed up our first contact with aliens to one of the heroes of the Battle for Eden, is given a new assignment: retake the occupied colony of Brigantia. Losing it would be a glancing blow to the Tahni Imperium, but it would Earth’s first solid strike against them, a chance to go on the offensive...Categorized as:
aliens colonization exploration galactic-empire invasion military space-fleet space-travel -
![What War Had Wrought by Ivan Kal]()
What War Had Wrought by Ivan Kal
Rated: 4.38 of 5 stars · 8 ratingsErasi and the Shara Daim are at war. The Shara Daim Legions stopped the Erasi fleets from pushing further into their territory, and with the invasion halted a lull in the war gives the Empire time to seek a diplomatic solution on behalf of their new ally...
Or - use our amazing romance book finder to get recommendations based on your favorite content tropes and themes. Mix and match at will.
