Citadel
An interplanetary battle is renewed in an epic novel of a warring solar system by the author of Ballistic.
The war should have been over. But it’s not for a group of nationalists grabbing for control.
It’s been two weeks since a missile with a nuclear warhead tore through the planetary defenses in the most blistering large-scale attack ever committed in the history of the Gaia system. Commander Dunstan Park of the Rhodian navy has been handpicked to command an experimental cruiser that could dictate the course of the escalating conflict. All he has to do is keep the ship from falling into the wrong hands.
On Gretia, the powder keg is beyond control. A terrorist attack against civilians draws Idina Chaudhary into a costly battle. It also forces a cautious Aden Jansen back into the fray. Now dedicated to a just cause, he’s still keeping his past hidden. The risk of exposing his former alliance could twist not only his fate but also that of his sister, Solveig, heir to the family empire.
With no time to waste, Dunstan hits the ground running. But as insurgents threaten the unstable peace, what’s ahead for both sides could change the destiny of the Gaia system forever.
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Marko Kloos
Marko Kloos has built a reputation in the world of military science fiction by weaving complex narratives where war, politics, and the human condition collide against the backdrop of interstellar conflict. A writer whose career is as multifaceted as his stories, Kloos' journey from his native Germany to the United States is one of both personal reinvention and creative discovery.
Growing up in the small town of Münster, Germany, Kloos developed an early love for science fiction, delving into the works of authors who would later inspire his own storytelling. His first passion, however, wasn't writing—it was military service. He spent time as a junior NCO in the West German military, which would later seep into his stories, giving them a grounded, authentic touch. After the military, Kloos tried his hand at several professions, including bookselling and IT administration, before settling into life as a full-time writer.
The Palladium Wars
In the shadow of a galaxy scarred by war, the Palladium Wars unfolds—a gripping saga of survival, political intrigue, and the complexities of rebuilding after devastation. This series takes readers deep into a six-planet system still reeling from the aftermath of a brutal conflict, where the scars of past battles are just as dangerous as the looming threats of new wars. Marko Kloos masterfully crafts a universe where nothing is as simple as it seems, and every decision has far-reaching consequences.
The Palladium Wars consists of four books and series is set to expand with the upcoming release of one more book. The current recommended reading order for the series is provided below.

