Military Space Opera

War is unending in the life of a Space Marine. After defeating a t’au invasion, Captain Uriel Ventris of the Ultramarines has returned to the Chapter's homeworld of Macragge, but finds little respite. The Ultramarines are thrust back into battle – and this time, the enemy is one of the Chapter's greatest nemeses. The traitorous Iron Warriors, led by renegade Warsmith Honsou, have gathered together a massive and brutal warband. Their target is the realm of Ultramar. Their objective is total annihilation.

No one wanted another war. Thomas Theisman didn't. Not after risking his life to overthrow the Committee of Public Safety's reign of terror and restore the Republic of Haven's ancient Constitution. Baron High Ridge didn't. The Prime Minister of Manticore was perfectly happy with the war he had. No one was shooting anyone else at the moment, and his government could continue to milk all those "hostilities only" tax measures for their own partisan projects.

Humans expanded into space...only to find a universe populated with multiple alien species bent on their destruction. Thus was the Colonial Union formed, to help protect us from a hostile universe. The Colonial Union used the Earth and its excess population for colonists and soldiers. It was a good arrangement...for the Colonial Union. Then the Earth said: no more.

The Amazon rainforest holds a world-changing secret—a ship lost to time from another world. College student Will Kaufman unearthed the biggest archaeological discovery in human history… he just needs to find a way back to Earth to tell people about it. Four thousand years ago, a Federation bounty hunter Void ship crashed on a remote and primitive planet. There it remained until Will found it and accidentally reactivated it, launching him light-years away.

The Hundred Worlds have withstood invasion by the relentless Hok for decades. The human worlds are strong, but the Hok have the resources of a thousand planets behind them, and their fleets attack in endless waves. The long war has transformed the Hundred Worlds into heavily fortified star systems. Their economies are geared for military output, and they raise specialized soldiers to save our species. Assault Captain Derek Straker is one such man among many.

Aliens exist...and, as it turns out, most of them aren’t that friendly. Jacob Brown wasn’t even born yet the first time they attacked Earth. He was only 14 the second time it happened. When Earth finally came together and fielded its first spaceborne military, Jacob didn’t hesitate to volunteer. Serving aboard a mighty starship, he’d be able to defend his planet - and his family - when, inevitably, they came again.

The People's Republic of Haven's sneak attack on the Kingdom of Manticore has failed. The Peeps are in disarray, their leaders fighting for power in bloody revolution, and the Royal Manticoran Navy stands victorious.

On the forge world of Morod, the machines never stop and the work never ends. The population toils in the mines and factoria to protect humanity from the monsters in the void, while the Adeptus Mechanicus enjoy lives of palatial comfort. Genetor Gammat Triskellian seeks to end this stagnant corruption. When he learns of a twisted congregation operating within the shadows, one which believes that the tech-priests are keeping people from their true salvation, he sees in them an opportunity to bring down Morod's masters and reclaim the world in the name of progress.

The collapse of The Flow, the interstellar pathway between the planets of the Interdependency, has accelerated. Entire star systems - and billions of people - are becoming cut off from the rest of human civilization. This collapse was foretold through scientific prediction...and yet, even as the evidence is obvious and insurmountable, many still try to rationalize, delay and profit from, these final days of one of the greatest empires humanity has ever known.

Before the Rebellion, the Empire reigns, in book one of a trilogy told through the eyes of Mon Mothma, Bail Organa, and Saw Gerrera—for fans of Andor. “The Mask of Fear is a perfect prequel for Andor.”—ScreenRant “In order to ensure the security and continuing stability, the Republic...

Leading the newly-formed Gray Death Legion has been challenging for Grayson Death Carlyle, so when a job comes their way, he’s only too happy to take it. The mission: train the local resistance on the planet Verthandi to resist their Draconis Combine masters. But things do not go well almost from the moment the Legion arrives. Trapped on Verthandi and facing a superior force and a fractured populace, the men and women of the Legion find themselves in a situation that makes the campaign on Trellwan look like a walk in the park.

The Emperor's vision of mankind ascendant lies in tatters. The Great Crusade is naught but a fading memory. The dream of Unity is no more. But with Horus's rebellion spreading to every corner of the Imperium and war engulfing new worlds and systems almost daily, there are some who now ask: were the signs there to be seen all along?

Humanity's thousand-year-old interstellar empire has been rotting from the inside for over a century, thanks to venal, corrupt, and power-hungry sovereigns from a dynasty many consider illegitimate. The latest in that lineage, an increasingly psychotic empress, is pushing her realm toward collapse as admirals and generals rebel against her rule. That rebellion quickly drags the once mighty Imperial Fleet into a devastating fratricidal conflict between factions.

As Moldark turns his attention to Capriana Prime, Magnus and his gladias attempt to convince the Republic’s leadership to raise the planetary defense shield. But this seemingly simple task turns out to be more difficult than anyone expected, placing the planet’s population in grave jeopardy. Desperate to save the capital, Magnus and the Gladio Umbra fight to save the seat of galactic rule at all costs. Azelon isn’t without her tricks, however, and provides new hardware for Magnus—the BATRIG mechanized battle armament system.

In the aftermath of an interstellar war with an alien race, Captain James Drake is unjustly court martialed. But Drake won't go down without a fight. Rather than surrender, he'll lead his loyal crew into the frontier worlds to repair and rearm. Fighting the treacherous Lord Admiral Malthorne, Drake makes alliances with aliens and smugglers to clear his name and defeat treason in his beloved homeland.

When the crew of the USSCN Týr, an elite special operations warship, is dispatched to investigate a silent mining colony, they expect political unrest or a corporate cover-up. What they find instead is beyond horror. The once-thriving Kyler Station is now a slaughterhouse. Bodies litter the corridors. Blood paints the walls. And the few survivors left whisper of an infection that turns men into monsters—stronger, faster, and impervious to pain.

Wayne dreamed of piloting a thirty-foot-tall walking robot that was closer to a battle-tank than anything else. They were called Walkers. They were armed with laser cannons, rockets, missiles, and heavy kinetic weapons more similar to artillery pieces than guns, and everything that went with that. Unfortunately, he had been declined military service. His only avenue left to become a Walker Pilot was to make it happen all on his own. Under his own power. With his own hands. Literally. Working his fingers to the bone, saving all he could, and digging through junkyards and salvage pits,

The Gray Death Legion is in the employ of the Free Worlds League and has even been given a landhold on the planet Helm. But dark forces conspire against them, and the Legion soon finds themselves declared renegade war criminals, fair game for anyone to attack. Now, they are on the run on their home planet, trying desperately to reach safety before the might of House Marik falls upon them. They are about to discover the true motives of those who engineered their downfall. And what they discover will change the Inner Sphere forever....

They were humanity's last hope. As the majority of Earth's population uploaded their consciousnesses to embrace digital immortality—free from illness and death in the simulated Metaverse—the Beta Explorers were tasked with expanding their presence throughout the galaxy. They terraformed worlds and created colonies so that humans could live and thrive in physical environments.

Ex-Army paratrooper Griffin “Fin” Brooks thought he left danger behind when his battlefield injuries forced him to pursue a new career in marine biology. But one fateful night off the coast of South Africa, a ship nearly crashes into him and his loyal golden retriever, Jacques. Not just any ship. A starship. Though its alien pilot is dead, the rare extraterrestrial animal inside is not. Fin learns the creature is being smuggled across the galaxy when a pair of interstellar visitors respond to the crash. But those same investigators accuse Fin and his dog of crimes he didn’t even know existed.