8 Frontlines books in order

"There is nobody who does [military SF] better than Marko Kloos. His Frontlines series is a worthy successor to such classics as Starship Troopers, The Forever War, and We All Died at Breakaway Station." -George R. R. Martin

The year is 2108, and the North American Commonwealth is bursting at… show more.

Vicious interstellar conflict with an indestructible alien species. Bloody civil war over the last habitable zones of the cosmos. Political unrest, militaristic police forces, dire threats to the Solar System...

Humanity is on the ropes, and after years of fighting a two-front war with losing odds, so is North American… show more.

The alien forces known as the Lankies are gathering on the solar system's edge, consolidating their conquest of Mars and setting their sights on Earth. The far-off colony of New Svalbard, cut off from the rest of the galaxy by the Lanky blockade, teeters on the verge of starvation and… show more.

The assault on Earth was thwarted by the destruction of the aliens' seed ship, but with Mars still under Lanky control, survivors work frantically to rebuild fighting capacity and shore up planetary defenses. Platoon sergeant Andrew Grayson must crash-course train new volunteers-all while dulling his searing memories of battle with… show more.

The time has come to take the fight to the Lankies.

Mars has been under Lanky control for more than a year. Since then, the depleted forces of Earth's alliances have rebuilt their fleets, staffing old warships with freshly trained troops. Torn between the need to beat the Lankies to… show more.

Humankind may have won the battle, but a new threat looms larger than ever before...

Earth's armed forces have stopped the Lanky advance and chased their ships out of the solar system, but for CDC officer Andrew Grayson, the war feels anything but won. On Mars, the grinding duty of… show more.

The battle against the Lankies has been won. Earth seems safe. Peacetime military? Not on your life.

It's been four years since Earth threw its full military prowess against the Lanky incursion. Humanity has been yanked back from the abyss of extinction. The solar system is at peace. For now.… show more.

Stranded light-years from home, Major Andrew Grayson and his crew are on a desperate mission to discover the Lankies' secrets. They can't let what they've found die with them.

Nine hundred light-years from home, Major Andrew Grayson and the crew of NACS Washington are marooned in a sunless system with… show more.