B. V. Larson

When Lieutenant Alex "Flex" Callahan encounters mysterious alien probes near Luna Station, no one believes his warnings—until it's too late. Human activity has awakened an alien presence deep in our Solar System.

The machine races demand a turn at the job, but the organics refuse to allow it. For more than a century, the Galactics have battled for supreme power. War and instability reign in place of peace, with every species spread over a hundred billion stars suffering as the Empire decays.

The Galactics arrived with their Battle fleet in 2052. Rather than being exterminated under a barrage of hell-burners, Earth joined a vast Empire that spans the Milky Way....

Unknown aliens attack Earth. Their planet is uncharted, mysteriously having avoided detection for centuries....

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

Left to die on a volcanic world by the Skrull, McGill and his mercenaries face waves of missile attacks with nowhere to hide. When the Skrull seal themselves inside an impenetrable energy dome, McGill knows he has to get creative.

Kyle Riggs has been away from Earth for a long time.…

When a towering alien monolith crashes onto James McGill's family farm, it triggers events that could spark a galaxy-wide war.

The Galactics arrived with their Battle fleet in 2052. Rather than being exterminated under a barrage of hell-burners, Earth joined a vast Empire that spanned the Milky Way....

Rebellion is the turning point in the great interstellar war between all living creatures and the machines....

Earth arms marines with alien technology and builds its first battle fleet....

Earth is locked in a dangerous arms race with Rigel. McGill’s efforts at diplomacy are disastrous. Events spin out of control and interstellar warfare consumes the outer provinces of the Empire....

A new threat arrives from the rim of the galaxy. From the colorless depths of space, unknown invaders strike worlds across the Frontier Zone....

They hunt us. They bomb our worlds for target practice. A star cluster in the constellation of Orion rotates once every 1,000 years. Those who rule there have an ancient tradition....

When Earth's colonies go silent, Legion Varus drops onto Kepler-62 expecting a routine investigation. Instead, they find something far worse than death.

In the fourth book of the series, James McGill is up for promotion. Not everyone is happy about that, and McGill must prove he's worth his stripes....

The Silicoids are a growing threat from beyond the frontier. Launching waves of crystalline drones, they ravage colonies all along the border of the Empire. Earth has been forced to ally with her enemies against this mysterious alien menace....

The colony on Haven-7 has gone rogue. The colonists have split into two factions: the Techborn and the Dusters.

A dirty deal was struck. Humanity was allowed to keep 300 rebellious worlds. In return, we declared war on a powerful enemy from beyond the frontier....

A lonely planet circles a star on the very border of Province 921. Critical resources produced there are claimed by both the Mogwa and the Skay. War between the Galactic giants becomes more likely every day....