Chris

In the extraordinary Worldwar tetralogy, set against the backdrop of World War II, Harry Turtledove, whom Publishers Weekly has called the "Hugo-winning master of alternate SF," wove an explosive saga of world powers locked in conflict against an enemy from the stars.

For thousands of years, there has been a cycle: a Demon King rises and conquers, and a Hero is reborn a hundred years later to defeat him. Each time, civilizations are ground to dust beneath the Demon King's hordes, but humanity has remained secure in the belief that a Hero of legend will always save them. There's just one slight problem. It's only been 23 years since the Demon King's latest rise, and this time, he's already conquered more than half the world. If humanity simply waits for the Hero's return, there may be no world left for him to save.

Investigating a series of violent raids by a mysterious predatory species, Captain James T. Kirk discovers that these events share a startling connection with the First Federation, a friendly but secretive civilization contacted early in the USS Enterprise's five-year mission. Traveling to the First Federation in search of answers, the Enterprise suddenly comes under attack from these strange marauders. Seeking refuge, the starship finds its way to the true home of the First Federation, an astonishing collection of worlds hidden from the galaxy beyond.

Captain Keyes is loved by the public but hated by Command. He captains the UHS Providence, an aging supercarrier and the last human ship not dependent on dark tech - technology humanity has used to rule over the galaxy since barely defeating the Ixa in the First Galactic War.

The Progenitors are here, and Captain Husher knows the galaxy isn’t ready. He spent his entire military career preparing, but it wasn’t enough. As the Interstellar Union continues to flail and colony after colony is consumed, Husher must make some impossible choices. About what to save. And what to let fall to the onslaught. If he can’t find a way to oppose the Progenitors, they will sweep through the multiverse like fire through a parched forest. It all comes down to this.