The Peacemaker-enforced ceasefire brought an end to the hostilities, but not a resolution, and now it’s up to the Four Horsemen to forge a lasting peace. Alexis Cromwell, despite her pregnancy, heads off to Capital with Nigel Shirazi to obtain justice from the enigmatic Mercenary Guild Council, but when they arrive, they’re quickly embroiled in galactic politics, and find out the situation is far, far worse than they could possibly have imagined.

The plot by the Galactic Union’s Mercenary Guild against the Four Horsemen has culminated in an invasion of Earth. Faced with an overwhelming force, the human mercs had no choice. They’ve fled, leaving Sansar Enkh to go to the Mercenary Guild headquarters on Capital Planet to stand trial for humanity. On the run, Jim Cartwright and Nigel Shirazi have travelled to the Winged Hussars’ secret base of New Warsaw, in an effort to convince Alexis Cromwell to join the fight, while the other mercenaries who escaped the fall of Earth have gone to the perceived safe haven of Karma.

Peacemakers. The Galactic Union’s most capable enforcers and resolute negotiators, their name alone elicits fear and awe among the Union’s citizenry. It is a time of upheaval throughout the Galactic Union. As the effects of the Omega War ripple outward, a Peacemaker falls silent at the outpost mining colony of Parmick. Sensing danger, the Peacemaker Guild dispatches two new graduates of the Academy to investigate and report. They are a new breed of Peacemaker, perfect for the clandestine infiltration mission.

At a time when Humans were just starting to venture forth into the Galactic Union as mercenaries, Martin Quincy survived long enough to do something no one else had - he retired. There was only one problem: He got bored. After battling aliens for many years - killing aliens and getting paid - retirement didn’t suit him, and he decided to strap on the combat armor and go back to the stars. Along with his old friend Kal, Martin joined Cartwright’s Cavaliers, humanity’s best merc company. Life was exciting! But he got bored. Again.

Before Hr'ent Golramm became a legendary Enforcer for the Peacemaker Guild, he was a mere candidate. Granted, he was a particularly unusual candidate - only six Oogar had ever successfully graduated from the Peacemaker Academy on Ocono, and Hr'ent would be the seventh. Every candidate must pass a commissioning mission in order to graduate, though, and Hr'ent's is unsolvable. The Pushtal of Vorrhurna were once one of the Mercenary Guild's 37 races.

Terry Clark grew up surrounded by his parent’s life’s work, the rescue and rehabilitation of cetaceans. Born just after first contact with the Galactic Union, he’s never known a time when aliens weren’t visiting Earth. At 10 years old, he had a normal life, until a visit from one of the aliens resulted in a ground-breaking discovery. The cetaceans have a developed and complex language...and it can be deciphered by the aliens’ translators.

Five years ago, aliens destroyed a carrier and its airwing at Jupiter without warning. Since then, the Earth’s nations have learned to work together, and they want to know more about the aliens who appeared, attacked, and vanished without a trace. The Americans have provided a new carrier. Chinese technology has made going after the invaders possible. And the Russians have developed a new control system that will give the craft never-before-seen capabilities. Mankind’s next war is upon us, and Uplink Squadron is the tip of the spear.

Heir to one of the leading "Four Horsemen" mercenary companies, Jim Cartwright is having a bad year. Having failed his high school VOWS tests, he's just learned his mother bankrupted the family company before disappearing, robbing him of his Cavalier birthright. But the Horsemen of eras past were smart - they left a legacy of equipment Jim can use to complete the next contract and resurrect the company.

In the 20th century Earth sent probes, transmissions, and welcoming messages to the stars. 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....

Get ready to experience two more origin stories in the Backyard Starship universe.

We were fighting on the wrong side of a war we couldn't win. And that was the good news. The Ruhar hit us on Columbus Day. There we were, innocently drifting along the cosmos on our little blue marble, like the native Americans in 1492. Over the horizon come ships of a technologically advanced, aggressive culture, and BAM! There go the good old days, when humans only got killed by each other. So, Columbus Day. It fits. When the morning sky twinkled again, this time with Kristang starships jumping in to hammer the Ruhar, we thought we were saved.

The mission is simple. Escort an emissary to an intergalactic peace summit. Try not to get in the way. Lt. Magnus and his 79th Recon Team have certainly handled worse, after all. But when an explosion rocks the tower and sends everyone into a panic, Magnus and his asset find themselves cut off from the rest of the team. Worse still, a dying alien chieftain gives them a priceless drive of intel, marking them for death. The mission has officially changed. With enemies on all sides, Magnus must do everything in his power to protect the emissary and escape the tower.

Surrounded and outgunned, a group of private military contractors known as “Strange Company” find themselves on a remote planet at the edge of known space, and on the losing end of a bad contract. Orbital D-beam strikes, dropships bristling with auto-guns, missiles, and troops - even Monarch space marines in state-of-the-art advanced battle rattle - will try to prevent the company from reaching the exfil LZ and getting off-world.

Soldiers of the Terran Armor Corps wage war across the stars. Wired into mechanized battle suits, they fight the terrifying battles that must be won, no matter the cost. Their deeds are legend, their reputation feared by the enemies of Earth and her allies, but how the Corps forges young men and women into mighty warriors is shrouded by mystery. Roland Shaw lost his parents to war; he volunteers for the Armor Corps to honor their memory and discover just how far he can push himself.

Contains books one and two of The Ibarra Crusade, a continuation of the action-packed military sci-fi Ember War Saga. Earth suffers under a brutal alien occupation, but one young man brings hope from beyond the galaxy's edge. Ely Hale returns to the Earth with a desperate plea from his father: Take his son to Stacy Ibarra, and remove the Qa’resh technology embedded in his skull before it kills him.