And here are the books you want...

At Omicron 9, Professor Ludendorff unearthed artifacts of the fabled Old Ones. During a meeting in a subterranean chamber, a portal appeared and aliens attacked, perhaps to kidnap the professor or grab the artifacts. Maddox’s new intuitive sense gave him just enough warning. He saved Ludendorff and rushed into the portal to forestall any more assaults—and thus began his lonely odyssey from one strange place to another.
Maddox eventually found a Builder potential unit, and they resolved to work together. But the unit betrayed him and then Victory, taking them to a system where Maddox had already been, one behind an impenetrable barrier and possessing an ancient power.
Maddox and Victory were outmatched and outgunned, facing aliens wielding super-science weapons. But if the captain ever wanted to see his wife and daughter again, and stop Lisa Meyers from her ongoing genocidal plans against humanity, he was going to have to solve an eon-old mystery and defeat every extraterrestrial bastard that got in his way.

Five years ago, the human race became independent as the Alphan Empire conceded it could no longer sustain its grip on Earth and withdrew, casting an unprepared humanity adrift on an interstellar sea of troubles. Since then, humanity has struggled mightily to secure its position in a galaxy full of hungry predators, many of whom see Earth as nothing more than a prize to be won.
Now, one of the galaxy’s superpowers has set its sights on Earth, launching a covert campaign to weaken and isolate the human race before it moves in for the kill. As their plan comes into the open, and the scale of the threat becomes apparent, the human race finds itself caught between a war it cannot win and shameful submission to dangerously inhuman race ...
... And if Earth loses the war, humanity’s short-lived independence will come to an end once again.

As a breaker, she was destined to live a hard life serving the whims of galactic corporations. As an Earth Alliance Marine, she has a chance to change the balance of power in the galaxy.
Holly Cropper grew up as a Breaker, mining the outer reaches of space. Now, she’s an up-and-coming lieutenant in the Earth Alliance Marines. Her mission: keep the peace and help humanity survive in the endless darkness of space. When a distress call comes in from a large mining vessel, her orderly world gets turned upside down. What starts with a simple pirate takeover turns into a hostile alien invasion. This Breaker Marine and her small team might be the only thing standing between humanity and annihilation at the hands of ancient aliens.

Ten years before Commander Grant and his SR-X experimental fighter left the ground, the U.S.C. Defiance became the flashpoint for humanity’s First Contact War. While unprepared for the devastating assault from an alien race that was by all previous accounts peaceful, the crew will need to band together if any are to have any hope of survival. Forging within them a steadfast determination, they must go beyond their capabilities and stand united not as mere technicians, but as soldiers of humanity.
With the only hope of a rescue light-years away, will they hold on long enough to warn the fleet of the war that is to come?

Ten years of war ended. We are at peace. But a new enemy has been waiting for the right moment.
The Poruk Empire and the United Human Alliance have been at peace for over a year. But an unprovoked attack on both their planets by an unseen enemy disrupts everything.
Captain Gibson, who was forced to retire early, is brought back to work together with Poruk Captain Serli. This time Gibson's mission is personal. And, there are so many unknowns lurking behind the mysterious enemy.
Can the two former enemies work together to investigate the plans of the new enemy? Or, will their years of mistrust and deception be their own downfall?

When he accepted the job on a backwater planet, Hunter thought it would be easy. He and his partner just had to track down a missing researcher. But when they find her, she’s fled a quarter of the way around the massive ring of twenty-seven gates and Hunter realizes all is not as he was told.
That simple realization, and Hunter’s drive for retribution, kick off a series of adventures leading to the most important discovery since the fall of the Gate Age—and put him in direct confrontation with the corp he’s been running from for the past 10 revolutions.

Sentinel warships were the answer to the Federation Wars...or so they thought.
Quinton thought the Sentinels were malfunctioning fleets of warships left over from the Federation Wars, but they’re much worse.
The Sentinels are a menace, terrorizing spacers across the galaxy in their hunt. But change is coming, and spacers across the galaxy will have to choose whether to fight for their future.
With Sentinel fleets preparing a major incursion, Admiral Quinton Aldren must get the new Alliance space navy into fighting shape. But how can he build an armada when most spacers believe he’s the enemy?
Quinton will fight. All that remains is how many spacers will join him to fight for humanity’s future.

Ultimately, the decisions of the admirals were the Viceroy's responsibility. Could the losses have been avoided?
Down on Alfheim, the situation was dire. Some brave men and women had to be left behind for the greater good. Viceroy Miles Hunt, gutted by the losses, needed to stay focused. A Titan-class warship, the Freedom, could be the key to victory, if it were fully operational with a trained crew.
It was not. Could Miles find another ally to be a wild card?
Sam, the medical Synth, faced something the programmers never expected--a moment where the only option was to break free of the code. The battle was fierce and there didn't seem to be a way out, until Sam came up with a plan. Would it save them?
The Republic needed a big win, one that would force peace, but they might have underestimated the resolve of the Zodarks. The superships were on the way, but time wasn't on their side.
The tide of the war had shifted.