Book picks similar to
A Call to Duty by David Weber


science-fiction
sci-fi
space-opera
honorverse

Fortune's Pawn


Rachel Bach - 2013
    She has plans. Big ones. And a ton of ambition. It's a combination that's going to get her killed one day - but not just yet. That is, until she just gets a job on a tiny trade ship with a nasty reputation for surprises. The Glorious Fool isn't misnamed: it likes to get into trouble, so much so that one year of security work under its captain is equal to five years everywhere else. With odds like that, Devi knows she's found the perfect way to get the jump on the next part of her Plan. But the Fool doesn't give up its secrets without a fight, and one year on this ship might be more than even Devi can handle.

Earth Strike


Ian Douglas - 2010
    Now the creatures known as humans are near this momentous turning point.But an armed threat is approaching from deepest space, determined to prevent humankind from crossing over that boundary—by total annihilation if necessary.To the Sh'daar, the driving technologies of transcendent change are anathema and must be obliterated from the universe—along with those who would employ them. As their great warships destroy everything in their path en route to the Sol system, the human Confederation government falls into dangerous disarray.There is but one hope, and it rests with a rogue Navy Admiral, commander of the kilometer-long star carrier America, as he leads his courageous fighters deep into enemy space towards humankind's greatest conflict—and quite possibly its last.

War Dogs


Greg Bear - 2014
    Maybe my last.They made their presence on Earth known thirteen years ago.Providing technology and scientific insights far beyond what mankind was capable of. They became indispensable advisors and promised even more gifts that we just couldn't pass up. We called them Gurus.It took them a while to drop the other shoe. You can see why, looking back.It was a very big shoe, completely slathered in crap.They had been hounded by mortal enemies from sun to sun, planet to planet, and were now stretched thin -- and they needed our help.And so our first bill came due. Skyrines like me were volunteered to pay the price. As always.These enemies were already inside our solar system and were moving to establish a beachhead, but not on Earth.On Mars.

Orphanage


Robert Buettner - 2004
    Original.

The Cruel Stars


John Birmingham - 2019
    Fashioning themselves as the one true “Human Republic,” the Sturm cut a bloody swath across the stars, killing billions before finally being defeated and driven into the far reaches of Dark Space. Centuries of peace bred complacency. Everyone believed the Sturm had died out in the Dark. They were wrong.The enemy has returned and, with a brutal and decisive attack, knocks out almost all of humanity’s defenses. Now on the brink of annihilation, humankind’s only hope is a few brave souls who survived the initial attack: Commander Lucinda Hardy, thrust into uncertain command of the Royal Armadalen Navy’s only surviving warship. Booker3, a soldier of Earth, sentenced to die for treason, whose time on death row is cut short when the Sturm attack his prison compound. Princess Alessia, a young royal of the Montanblanc Corporation, forced to flee when her home planet is overrun and her entire family executed. Sephina L’trel, the leader of an outlaw band who must call on all of her criminal skills to resist the invasion. And, finally, Admiral Frazer McLennan, the infamous hero of the first war with the Sturm hundreds of years ago, who hopes to rout his old foes once and for all—or die trying.These five flawed, reluctant heroes must band together to prevail against a relentless enemy and near-impossible odds. For if they fail, the future itself is doomed.

The Risen Empire


Scott Westerfeld - 2003
    Enemy Rix are machine-augmented humans who worship AI compound minds. Separated by light years, bound by an unlikely love, Zai and pacifist senator Nara Oxham face the Rix and hold the fate of the empire.

Starship Troopers


Robert A. Heinlein - 1959
    We just call it “The Bug War." Everything up to then and still later were "incidents," "patrols," or "police actions." However, you are just as dead if you buy the farm in an "incident" as you are if you buy it in a declared war...In one of Robert A. Heinlein’s most controversial bestsellers, a recruit of the future goes through the toughest boot camp in the Universe—and into battle with the Terran Mobile Infantry against mankind’s most alarming enemy.

The Forever War


Joe Haldeman - 1974
    A reluctant conscript drafted into an elite Military unit, Private William Mandella has been propelled through space and time to fight in the distant thousand-year conflict; to perform his duties without rancor and even rise up through military ranks. Pvt. Mandella is willing to do whatever it takes to survive the ordeal and return home. But "home" may be even more terrifying than battle, because, thanks to the time dilation caused by space travel, Mandella is aging months while the Earth he left behind is aging centuries.

A Talent for War


Jack McDevitt - 1989
    But now, one man believes Sim was a fraud, and Alex must follow the legend into the heart of the alien galaxy to confront a truth far stranger than any fiction.

Steel World


B.V. Larson - 2013
    Unfortunately, someone noticed. The Galactics arrived with their battle fleet in 2052. Rather than being exterminated under a barrage of hell-burners, Earth joined their vast Empire. Swearing allegiance to our distant alien overlords wasn’t the only requirement for survival. We also had to have something of value to trade, something that neighboring planets would pay their hard-earned credits to buy. As most of the local worlds were too civilized to have a proper army, the only valuable service Earth could provide came in the form of soldiers…someone had to do their dirty work for them, their fighting and dying. I, James McGill, was born in 2099 on the fringe of the galaxy. When Hegemony Financial denied my loan applications, I was kicked out of the university and I turned to the stars. My first campaign involved the invasion of a mineral-rich planet called Cancri-9, better known as Steel World. The attack didn’t go well, and now Earth has entered a grim struggle for survival. Humanity’s mercenary legions go to war in STEEL WORLD, bestselling author B. V. Larson’s latest science fiction novel.

Gemini Cell


Myke Cole - 2015
    But when he sees something he was never meant to see on a covert mission gone bad, he finds himself—and his family—in the crosshairs. Nothing means more to Jim than protecting his loved ones, but when the enemy brings the battle to his front door, he is overwhelmed and taken down.It should be the end of the story. But Jim is raised from the dead by a sorcerer and recruited by a top secret unit dabbling in the occult, known only as the Gemini Cell. With powers he doesn’t understand, Jim is called back to duty—as the ultimate warrior. As he wrestles with a literal inner demon, Jim realizes his new superiors are determined to use him for their own ends and keep him in the dark—especially about the fates of his wife and son…

Earth Alone


Daniel Arenson - 2016
    They came to destroy us. Fifty years ago, bloodthirsty aliens devastated the Earth. Most of humanity perished. We fell into darkness. But now we rise from the ashes. Now we fight back. Marco Emery was born into the war. After his mother is killed, he joins the Human Defense Force, Earth's ragtag army. Emery must survive basic training, become a soldier, and finally face the aliens in battle. Against the alien onslaught, Earth stands alone. But we will fight. We will rise. We will win.

The Last Watch


J.S. Dewes - 2021
    The Last Watch, where a handful of soldiers stand between humanity and annihilation.The Divide.It’s the edge of the universe.Now it’s collapsing—and taking everyone and everything with it.The only ones who can stop it are the Sentinels—the recruits, exiles, and court-martialed dregs of the military.At the Divide, Adequin Rake, commanding the Argus, has no resources, no comms—nothing, except for the soldiers that no one wanted.They're humanity's only chance.

Aurora: CV-01


Ryk Brown - 2011
    And this is only the beginning… "Aurora: CV-01" is 77,000 word novel, and is Episode 1 of The Frontiers Saga. Episode 2, "The Rings of Haven"is available now!

Planetside


Michael Mammay - 2018
    So when Colonel Carl Butler answers the call from an old and powerful friend, he knows it's something big—and he's not being told the whole story. A high councilor's son has gone MIA out of Cappa Base, the space station orbiting a battle-ravaged planet. The young lieutenant had been wounded and evacuated—but there's no record of him having ever arrived at hospital command. The colonel quickly finds Cappa Base to be a labyrinth of dead ends and sabotage: the hospital commander stonewalls him, the Special Ops leader won't come off the planet, witnesses go missing, radar data disappears, and that’s before he encounters the alien enemy. Butler has no choice but to drop down onto a hostile planet—because someone is using the war zone as a cover. The answers are there—Butler just has to make it back alive…