Books like 'Relentless'
Readers who enjoyed Relentless by Jack Campbell also liked the following books featuring the same tropes, story themes, relationship dynamics and character types.
futuristic sc-fi space action / adventure military, war & conflict space-opera war military aliens space-travel
-
Tiamat's Wrath by James S.A. Corey
Rated: 4.57 of 5 stars · 48 ratingsThirteen hundred gates have opened to solar systems around the galaxy. But as humanity builds its interstellar empire in the alien ruins, the mysteries and threats grow deeper... -
![Revolution by Joshua Dalzelle]()
Revolution by Joshua Dalzelle
Rated: 4.58 of 5 stars · 26 ratingsFor thousands of years the ConFed has been the most powerful force in the quadrant. It is the umbrella under which hundreds of planets and trillions of beings live in relative peace ... despite the corruption and waste, it's a system that most accept as preferable to the chaos that would ensue in its absence... -
![A Grimm Sacrifice by Jeffery H. Haskell]()
A Grimm Sacrifice by Jeffery H. Haskell
Rated: 4.50 of 5 stars · 14 ratingsIn order to survive, Interceptor must change the rules.The Consortium is in real trouble. Caliphate Naval forces have stepped up their raids on the border planets and are taking people by the thousands. They can defend the wormhole, or they can defend their planets, not both... -
![The Human Factor by Joshua Dalzelle]()
The Human Factor by Joshua Dalzelle
Rated: 4.49 of 5 stars · 26 ratingsCaptain Jason Burke is a man apart, and not just because he's the only of his kind for thousands of lightyears in any direction. The changes to his body and to his genetic code have made him faster, stronger, more able to survive in his dangerous occupation ... but they've also ensured that he'll never truly fit in with others of his species... -
-
![Legends Never Die by Joshua Dalzelle]()
Legends Never Die by Joshua Dalzelle
Rated: 4.52 of 5 stars · 23 ratingsJason Burke is a broken man. The loss of his friend and crewmate on an ill-fated mission to a Pillar World has left him in a downward spiral of rage and self-destruction... -
![Nightfall by Jay Allan]()
Nightfall by Jay Allan
Rated: 4.42 of 5 stars · 12 ratingsNight is falling. The unstoppable Hegemony invasion has reached the very heart of the Confederation. Battle after desperate battle has been fought, and each time, the Confeds have been pushed back, columns of battered and blasted ship retreating from system to system. Now, they prepare to grimly defend the capital world of Megara, the very center of the Confederation...Categorized as:
aliens exploration first-contact military nautical space-fleet space-opera space-travel -
![Odysseus Ascendant by Evan Currie]()
Odysseus Ascendant by Evan Currie
Rated: 4.41 of 5 stars · 27 ratingsA mysterious entity may be the key to a starship’s survival—or a terrifying new threat—as the Odyssey One series continues… The Empire has set its sights on its next target: human Terrans. As effective allies of the Priminae, the denizens of Earth have proven themselves enemies to the Empire, and now the Imperial forces know more about the Terran home world than ever before... -
![Redemption by Joshua Dalzelle]()
Redemption by Joshua Dalzelle
Rated: 4.41 of 5 stars · 27 ratingsThere is a fine line between right and wrong, good and evil. For years Jason Burke has straddled that line as best he can, always convinced that despite the violence carried out by him and his team they were firmly on the right side of that line. But as he reflects on his time with Omega Force, he begins to have his doubts... -
![Corsair Menace by Jamie McFarlane]()
Corsair Menace by Jamie McFarlane
Rated: 4.48 of 5 stars · 21 ratingsDeep in debt and stranded, a suicide mission may be this crew’s only hope… Liam Hoffen thought saving the world would cut him and his friends some slack. Instead, they’re bankrupt, shipwrecked, and fugitives on a backwater planet. So much for gratitude… But, after discovering an ancient Kroerak ship, Liam sees an opportunity to locate the home world of the vicious alien species...Categorized as:
aliens first-contact military space-fleet space-opera action-adventure adult audiobook -
![Secret of the Phoenix by Joshua Dalzelle]()
Secret of the Phoenix by Joshua Dalzelle
Rated: 4.40 of 5 stars · 26 ratingsCaptain Jason Burke has begun to suspect that the random attacks on his ship and crew over the last couple of years may not be so random after all. Evidence is mounting that there is something on the Phoenix ... something that powerful factions will stop at nothing to get their hands on... -
![Alien Arcana by Glynn Stewart]()
Alien Arcana by Glynn Stewart
Rated: 4.35 of 5 stars · 31 ratingsAn alien ruinA murdered archeologistAn ancient secret—and a conspiracy that will kill to keep it! When a scientist is murdered after finding signs of alien magic in an archeological dig, Mage Damien Montgomery, Hand of the Mage-King of Mars, is sent to investigate both the murder and the alien runes...Categorized as:
aliens exploration military space-fleet space-opera space-travel war action-adventure -
![Buccaneers by Jamie McFarlane]()
Buccaneers by Jamie McFarlane
Rated: 4.43 of 5 stars · 23 ratingsThe crew of the Hotspur just happens to be looking for a new home. If Nick James is right, and he usually is, the Tipperary solar system is about to become the busiest trading hub in the galaxy. To sweeten the pot, the cloud-city of Lèger Nuage is offering free warehouse space to qualified traders. It's a deal that seems too good to pass up. Of course, nothing's as simple as it seems...Categorized as:
exploration military space-fleet space-opera space-travel war action-adventure adult -
![Give No Quarter by Jamie McFarlane]()
Give No Quarter by Jamie McFarlane
Rated: 4.46 of 5 stars · 21 ratingsAlternate cover for ASIN B01FQ57I7G can be found here: Give No Quarter Branded criminals and on the run from the most powerful corporation in the known universe, Liam Hoffen and the crew of Hotspur have a simple choice to make...Categorized as:
aliens exploration first-contact military space-fleet space-opera space-travel action-adventure -
![Madame Guillotine by Jason Anspach, Nick Cole]()
Madame Guillotine by Jason Anspach, Nick Cole
Rated: 4.50 of 5 stars · 8 ratingsLeave no man behind. On Detron, a simmering protest boils over and turns deadly when militants hiding among the demonstrators deliberately shoot down a group of legionnaires, executing one survivor and taking two for ransom. The only Republic asset the captured leejes can rely on is a lone marine sniper who defies orders in a desperate attempt to save them... -
-
![Return of the Archon by Joshua Dalzelle]()
Return of the Archon by Joshua Dalzelle
Rated: 4.36 of 5 stars · 27 ratingsListening length: 9 hoursEach member of Omega Force carries his own baggage. Most of them are running from their pasts or simply trying to forget them. One member of the small mercenary crew is not who he claims to be, however. When his former life collides with his current one, the team is drawn into a conflict that could have profound consequences for the future of an entire species... -
![Voice of Mars by Glynn Stewart]()
Voice of Mars by Glynn Stewart
Rated: 4.33 of 5 stars · 30 ratingsYOU CAN NEVER GO HOMEWhen accusations of piracy and mass murder are laid against his homeworld, Damien Montgomery is sent to resolve the crisis.As counter-accusations fly and an old flame re-enters his life, the newest Hand of the Mage-King of Mars finds himself in the midst of a bloody interstellar shadow war... -
![Zero Recall by Sara King]()
Zero Recall by Sara King
Rated: 4.33 of 5 stars · 30 ratingsIt's been 53 turns after the legendary Commander Zero graduated as a Congie warrior. Joe, now a battle hardened veteran, has spent his life surviving wars he had no right to survive. Yet his real test is coming: New forces are conspiring to start a great war like the universe has never seen, one that would rip apart the very fabric of Congress... -
![Bane of Worlds by Anthony James]()
Bane of Worlds by Anthony James
Rated: 4.40 of 5 stars · 10 ratingsFollowing his successful mission to recover the missing warship ESS Crimson, Captain John Duggan finds himself unredeemed in the eyes of his superiors. His duties resume and this time he’s given something easy - escort a cargo ship to a distant planet and bring it home safely. But war is never so predictable and a straightforward mission becomes something much more important...Categorized as:
aliens exploration military space-fleet space-opera space-travel action-adventure adult -
![Excalibur Lost: a Space Opera Novella by Glynn Stewart]()
Excalibur Lost: a Space Opera Novella by Glynn Stewart
Rated: 4.40 of 5 stars · 10 ratingsA broken speciesA broken manA lost legend…Only dreams and stories remain of the worlds humanity once called home, but scattered refugees live in the corners of the empire of their conquerors, the Sacred Council of Races... -
![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... -
![Duty Calls: The adventure continues by James Haddock]()
Duty Calls: The adventure continues by James Haddock
Rated: 4.33 of 5 stars · 12 ratingsDuty Calls continues the story of Nic, Mal, Jazz and Jade as they fight to hold what belongs to them. The Corporations are becoming more aggressive in their effort to steal their inventions. Our four friends are matching the corporate's aggression blow for blow. The fight has already turned deadly, and the Corporation has shown they aren't afraid to spill blood... -
![Hand of Mars by Glynn Stewart]()
Hand of Mars by Glynn Stewart
Rated: 4.31 of 5 stars · 30 ratingsROGUE MAGE TURNED INTERPLANETARY ENVOYThree years ago, as Ship’s Mage of the starship Blue Jay, Damien Montgomery was pursued to the edge of human space by both the agents and enemies of the Mage-King of Mars — before being brought in from the cold.Now, trained in new skills by the Mage-King himself, Damien has been sent to the planet Ardennes alongside Alaura Stealey, Hand of the King... -
![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...Categorized as:
aliens exploration first-contact military nautical space-fleet space-opera space-travel -
![Ancillary Mercy by Ann Leckie]()
Ancillary Mercy by Ann Leckie
Rated: 4.24 of 5 stars · 43 ratingsAncillary Mercy is the stunning conclusion to the trilogy that began with Ancillary Justice, the only novel ever to win the Hugo, Nebula, and Arthur C. Clarke Awards.For a moment, things seemed to be under control for Breq, the soldier who used to be a warship... -
-
![Confederation by Michael R. Hicks]()
Confederation by Michael R. Hicks
Rated: 4.25 of 5 stars · 16 ratingsIn the second book of the In Her Name science fiction & fantasy series, Reza Gard has been banished from the Kreelan Empire and is once again a stranger in a strange land as he returns to the human Confederation. Befriended by a marooned Confederation naval officer leading a desperate fight against the Kreelans on a distant colony world, she reunites Reza with Nicole Carré... -
![The Enemy Within by Joshua Dalzelle]()
The Enemy Within by Joshua Dalzelle
Rated: 4.32 of 5 stars · 27 ratingsThe quadrant is burning. Violent, deadly uprisings are breaking out, seemingly at random, all across the Confederation’s sphere of influence. The response by the powerful Confederation Fleet has been swift and decisive, but for every planet they restore order to, another erupts into chaos... -
![Homeworld by Evan Currie]()
Homeworld by Evan Currie
Rated: 4.29 of 5 stars · 30 ratingsWar comes home to the Sol system when the Drasin track a human ship back to Earth, with devastating consequences. Facing massive force of invading alien ships wielding terrible power, the crew of the NAC spacecraft, their allies, and the people of Earth must mount a desperate effort to stop them... -
![Starship's Mage: Omnibus by Glynn Stewart]()
Starship's Mage: Omnibus by Glynn Stewart
Rated: 4.22 of 5 stars · 18 ratingsIn a galaxy tied together by the magic of the elite Jump Magi, Damien Montgomery is a newly graduated member of their number. With no family or connections to find a ship, he is forced to service on an interstellar freighter known to be hunted by pirates...Categorized as:
aliens exploration military space-fleet space-opera space-travel war action-adventure -
![We Few by David Weber, John Ringo]()
We Few by David Weber, John Ringo
Rated: 4.22 of 5 stars · 18 ratingsPrince Roger MacClintock was an heir to the galaxy's Throne of Man-and a self-obsessed spoiled young brat . . . until he and the Royal Marines sent to protect him were stranded on Marduk with only their feet to get them half way around the entire planet. So far, they've traversed a continent, crossed a sea full of ship-eating monsters, taken over an enemy spaceport, and hijacked a starship... -
![Odysseus Awakening by Evan Currie]()
Odysseus Awakening by Evan Currie
Rated: 4.31 of 5 stars · 26 ratingsDefy the inevitable. Such is the stance of Confederation captain Eric Weston and the crew of the starship Odysseus, patrolling the outer limits of Priminae space, anticipating the Empire’s next attacks. Connected with the Terran FTL tech—the transition drive—humanity might stand a chance against the overwhelming forces. Until the entire planetary system goes dark... -
![Pursuit of the Bold by Jamie McFarlane]()
Pursuit of the Bold by Jamie McFarlane
Rated: 4.51 of 5 stars · 14 ratingsA world-shattering invasion. A long-dead rumor. A death-defying risk to save humanity. If the Kroerak Empire had a soft spot, Liam Hoffen would have found it by now. After years of fighting the blasted bug invaders, he’s all but thrown in the towel. To make matters worse, intercepted enemy plans show the empire’s next attack could wipe them off the map...Categorized as:
aliens exploration first-contact military space-opera space-travel action-adventure adult -
![Incursion at Elea Station by Jamie McFarlane]()
Incursion at Elea Station by Jamie McFarlane
Rated: 4.54 of 5 stars · 13 ratingsAn alien invasion. A home-world destroyed. Can an embattled captain survive a daring fight to save the remnant of his colony? Privateer Liam Hoffen can’t wait to reunite with his family. But after he emerges from a 20-year stasis, he’s shocked to discover a hostile enemy has razed his home and exiled his people...Categorized as:
aliens exploration military space-opera space-travel action-adventure adult audiobook -
![Andromeda Rising by Jay Allan]()
Andromeda Rising by Jay Allan
Rated: 4.38 of 5 stars · 8 ratingsA Hero is Born The Gut. An industrial hell. The foulest and most decrepit slum on Parsephon. A nest of human misery, where hope is word long forgotten, and the dead are carted away every day. It is the worst pit in the Confederation’s great industrial machine known as the Iron Belt...Categorized as:
space-opera space-fleet aliens exploration first-contact space-travel military sci-fi -
![Rogue World by B.V. Larson]()
Rogue World by B.V. Larson
Rated: 4.29 of 5 stars · 27 ratingsThe 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... -
-
![Savage Homecoming by Joshua Dalzelle]()
Savage Homecoming by Joshua Dalzelle
Rated: 4.29 of 5 stars · 27 ratingsEver since he joined Omega Force, Captain Jason Burke has lived with the underlying fear that one day Earth would be discovered. His desire to keep Earth’s existence and location a secret has driven him to extremes, and kept him far away from his homeworld for a long time.But now Jason’s greatest fear is realized, and a fleet of alien ships has attacked his planet... -
![March Upcountry by David Weber, John Ringo]()
March Upcountry by David Weber, John Ringo
Rated: 4.17 of 5 stars · 24 ratingsPrince Roger MacClintock is a spoiled young princeling hardly worth the space he takes up. Now he must become a man, or the entire galaxy will suffer arrested adolescence... -
![The Hot Gate by John Ringo]()
The Hot Gate by John Ringo
Rated: 4.27 of 5 stars · 29 ratingsNew York Times Best-Selling Author.The Big Showdown with an Alien Empire, to Keep the Earth Free—and Maybe Free the Galaxy as Well. The fight to free the Earth from alien domination began in Live Free or Die, and continued in Citadel. Now Tyler Vernon, and his troops aboard the gigantic battle station Troy, face a desperate battle with the forces of galactic tyranny... -
![...Till It's Over! by Robert M. Kerns]()
...Till It's Over! by Robert M. Kerns
Rated: 4.49 of 5 stars · 14 ratingsClaim an inheritance.It's a simple goal, right?Nothing is simple when Cole returns to Centauri, the seat of Coleson Interstellar Engineering. Challenges at every turn, with no idea who he can trust. And then...the Solar Republic gets involved... -
![Judgment of the Bold by Jamie McFarlane]()
Judgment of the Bold by Jamie McFarlane
Rated: 4.49 of 5 stars · 14 ratingsA retreating alien enemy. Civilization's new beginning. A terrifying threat could postpone his victory lap… forever. After discovering an indefensible weapon, Liam thought he had the Kroerak invaders on the ropes. But as he and his crew root out the last alien strongholds, he comes face to face with the staggering damage the invaders wreaked on the crew’s now-inhospitable homeworlds...Categorized as:
aliens exploration military space-fleet space-opera space-travel action-adventure adult -
![Tides of War by M.R. Forbes]()
Tides of War by M.R. Forbes
Rated: 4.30 of 5 stars · 10 ratingsAfter being saved from annihilation by the Old Gator’s daring plan, Gabriel and the crew of the Magellan find themselves in the most unlikely of places: a captured enemy starship. While learning to control the alien vessel introduces a new set of challenges, the secrets they discover within may prove to be the edge they so desperately need... -
![Formation (Forgotten Space Book 2) by M.R. Forbes]()
Formation (Forgotten Space Book 2) by M.R. Forbes
Rated: 4.30 of 5 stars · 10 ratingsAfter narrowly escaping destruction, Nicholas and his crew find themselves flung far across the universe with no way home. When a distress call from a nearby planet catches their attention, they decide to investigate with the hope the signal is somehow connected to their arrival.It isn’t long before the truth of Foresight’s mission comes into clearer focus, and Nicholas doesn’t like what he sees... -
![Weapons of War by M.R. Forbes]()
Weapons of War by M.R. Forbes
Rated: 4.30 of 5 stars · 10 ratingsIn the year 2280, an alien fleet stole our Earth. For fifty years they hunted us. For fifty years they enslaved us. For fifty years we lived in fear. Nothing lasts forever. They can try to quell us. They can try to break us. They can chase us to the ends of the Earth. They can chase us to the ends of the Universe. We’ve won our first battle. We’ve earned our first taste of hope... -
![Olympus by Ivan Kal]()
Olympus by Ivan Kal
Rated: 4.30 of 5 stars · 10 ratings-NOTE- This book has been professionally re-edited as of March 17, 2016 The year is 2081. Earth is recovering from a devastating nuclear war. An age of technological advancement. A find at the bottom of the Ocean. A man driven by a dream. The time for humanity to reach to the stars is now. A find provides Tomas Klein with the tools to speed up his timetable and execute his plans...Categorized as:
aliens exploration military space-fleet space-opera space-travel war action-adventure -
![Sanctuary by Ivan Kal]()
Sanctuary by Ivan Kal
Rated: 4.30 of 5 stars · 10 ratings-NOTE- This book has been professionally re-edited as of March 23, 2016 A new start, six hundred light-years from Earth. Tomas Klein founder of Olympus had brought his people to a new world, freed them from constraints of Earth and its governments. But a new world brings new dangers. Tomas Klein will need to set aside past regrets and rise up to the challenge...Categorized as:
aliens first-contact military space-fleet space-opera space-travel war action-adventure -
-
![A Pocket Full of Lies by Kirsten Beyer, Martin Frei]()
A Pocket Full of Lies by Kirsten Beyer, Martin Frei
Rated: 4.30 of 5 stars · 10 ratingsThe Full Circle Fleet has resumed its unprecedented explorations of the Delta Quadrant and former Borg space. Commander Liam O'Donnell of the U.S.S. Demeter makes a promising first contact with the Nihydron—humanoid aliens that are collectors of history...Categorized as:
aliens exploration first-contact military space-opera space-travel action-adventure adult -
![Rogue Starship by David Alastair Hayden]()
Rogue Starship by David Alastair Hayden
Rated: 4.30 of 5 stars · 10 ratingsWhen renowned archeologist Gav Gendin finds an Ancient starship, and a stasis chamber with a living member of the extinct alien race inside, he knows something strange is going on. Visions and dreams aren't the normal way archeologists uncover artifacts, but that's what guided him to the Ancient ship.The discovery should be the greatest triumph of his career...Categorized as:
aliens exploration military space-fleet space-opera space-travel action-adventure adult -
![Chains of Duty by Anthony James]()
Chains of Duty by Anthony James
Rated: 4.30 of 5 stars · 10 ratingsFor Captain John Duggan, it seems like war never ends. Each success brings another mission and more death. Following events at the Helius Blackstar, Duggan is given the Space Corps’ newest warship – a heavy cruiser armed to the teeth with the latest weapons and technology...Categorized as:
aliens exploration military space-fleet space-opera space-travel war action-adventure -
![Honor Among Enemies by David Weber]()
Honor Among Enemies by David Weber
Rated: 4.22 of 5 stars · 36 ratingsKNOW THY ENEMYFor Captain Honor Harrington, it's sometimes hard to know who the enemy really is. Despite political foes, professional jealousies, and the scandal which drove her into exile, she's been offered a chance to reclaim her career as an officer of the Royal Manticoran Navy. But there's a catch... -
![Point of Origin by M.R. Forbes]()
Point of Origin by M.R. Forbes
Rated: 4.25 of 5 stars · 12 ratingsA starship lost. A creator found. A frantic race to save them both. For Colonel Mitchell “Ares” Williams, there is no giving up. There is no going back. The Goliath may have fallen into enemy hands, but the war must go on. After all, he and the Riggers have what they need to locate the Creator, the man responsible for the alien threat and the key to unraveling their unstoppable attack... -
![The Privilege of Peace by Tanya Huff]()
The Privilege of Peace by Tanya Huff
Rated: 4.25 of 5 stars · 12 ratingsFormer space marine Torin Kerr returns for one final adventure to save the Confederation in the last book in the military science fiction Peacekeeper trilogy.Warden Torin Kerr has put her past behind her and built a life away from the war and everything that meant. From the good, from the bad. From the heroics, from the betrayal...
Or - use our amazing romance book finder to get recommendations based on your favorite content tropes and themes. Mix and match at will.
