The Inter-Planetary Corporation has sent the space ship Arcturus on a routine fact-finding mission, only to have it ambushed by a strange alien craft, leaving physicist Steve Stevens and Nadia Newton first stranded on Ganymede, and then caught up in the Vorkul-Hexan war. A space adventure of staggering proportions by science fiction master writer E. E. “Doc” Smith.

Across the six-planet expanse of the Gaia System, the Earthlike Gretia struggles to stabilize in the wake of an interplanetary war. Amid an uneasy alliance to maintain economies, resources, and populations, Aden Robertson reemerges. After devoting fifteen years of his life to the reviled losing side, with the blood of half a million casualties on his hands, Aden is looking for a way to move on. He’s not the only one. A naval officer has borne witness to inconceivable attacks on a salvaged fleet. A sergeant with the occupation forces is treading increasingly hostile ground.

There he was in his sailboat in the middle of the Atlantic, all alone and loving it. Well, there was a US Navy carrier group on his southern horizon, but he was a Navy guy himself, so he didn't mind. Then came the UFOs, hurtling in from the Outer Black to overfly the carriers at Mach 17. Their impossible aerobatics were bad enough—but then they started shooting at each other, and at the Navy, with nukes. Little ones at first, but winding up with a 500 megatonner at 90 miles that fried every piece of electronics within line-of-sight.

In the early 22nd century, humanity has spread through the solar system - and their electromagnetic signals have traveled hundreds of light years. An alien race called the Oghaldzon has decided that mankind is dangerously insane...and must be forcibly taken under control. The invasion fleet's technology is decades ahead of Earth's best. They have more ships than the human fleets combined, and a seemingly-inexhaustible number of ground troops. And they're not afraid to kill billions of people.

Two centuries after humanity colonized the stars, new dangers emerge. The peaceful inhabitants of the Conclave are threatened by expanding alien powers. Invaders threaten the star cluster, attacking our fringe settlements. Captain Bill Gorman has mysteriously disappeared. His clone, set aside for a dark day like this, awakens and begins to put together the pieces. What’s gone wrong out on the frontier? Why are our colonies being attacked by aliens while the Conclave worlds dream of better days? And what happened to the original Captain Gorman?

After two brutal, bloody struggles for their very existence against implacable alien foes, humanity is victorious, but not at peace. As distrust and accusations consume the political discourse between the two major factions, the Eastern Star Alliance military has already begun executing small raiding missions into United Terran Federation space. The Federation fleet, still reeling from the last war, is in no shape to try and protect its own borders.

Geary believed in the Alliance. Even when he uncovered overwhelming evidence that the highest echelons of the government and fleet command were involved in secret programs and prison camps, he believed it was worth saving. He believed his duty was to see that justice was served even though some factions feared that revealing the truth would cause the Alliance to crumble. But after narrowly surviving two assassination attempts when he brings evidence of the misdeeds to the capital star system, Geary realizes that some want to get rid of him.

Together in one volume, the three novels of the Bicentennial War. Decades after the events of the Warp Marine Corps series, new threats menace humanity. The only thing standing before the invaders and destruction is the U.S. Navy and the Warp Marine Corps. To the Strongest: The space nomads known as the Horde arrive to the Known Galaxy in unprecedented numbers, aboard massive weaponized asteroids. As the US Navy deals with the unprecedented threat, an elite Marine unit, the Wraiths, joins the fight.

Spring 1942. The United States is reeling from the blow the Japanese inflicted at Pearl Harbor. But the Americans are determined to turn the tide. The key comes from Commander Joe Rochefort, a little known “code breaker” who cracks the Japanese military encryption. With Rochefort’s astonishing discovery, Admiral Chester Nimitz will know precisely what the Japanese are planning.

He thought the bloodshed was over. The true terror is just beginning...Captain Liam Hoffen has no time to relax after defeating the Mendari. Hastily organizing an expedition to their home world, he brings his beleaguered crew across the stars to install the new leadership. But as soon as he arrives, a massive prototype warship slices into their path and threatens the entire mission. After a daring confrontation, Hoffen pushes through to the planet. But once there, he discovers a terrifying weapon of mass destruction was launched at the end of the war.

A century ago, the Sentience Wars tore the galaxy apart and nearly ended the entire concept of intelligent space-faring life. In the aftermath, a curious tradition was invented - something to cheer up everyone who was left and bring the shattered worlds together in the spirit of peace, unity, and understanding. Once every cycle, the civilizations gather for the Metagalactic Grand Prix - part gladiatorial contest, part beauty pageant, part concert extravaganza, and part continuation of the wars of the past.

"Triplanetary" is a science fiction novel by E. E. Smith. The novel covers several episodes in an eons-long human breeding project by the super-intelligences of the Arisians. This alien race is breeding two genetic lines to become the ultimate weapon in Arisia's cosmic war with their archenemies, the Eddorians. The story cover the Kinnison genetic line during the fall of Atlantis, Nero's reign in Rome, World Wars One, Two, and Three.

For 17 years, Colonel Henry Wong and the United Planets Space Force have fought the Kenmiri Empire. They drove the alien overlords back from humanity's borders into their own stars and found allies among the Kenmiri's slaves and subjects. Now the war is over. A great Gathering has been called of the allies who fought the war, but they only ever shared a common enemy. With the Kenmiri in retreat, a thousand new agendas are revealed.

Lieutenant Sam Bitka, US Naval Reserve, is getting used to civilian life when he is called back to active duty. Tensions between Earth and the alien Varoki are on the rise, and Sam is assigned as tactical officer aboard the deep space destroyer USS Puebla. Dispatched to the distant world of K'tok to protect human colonists, he wants nothing more than to serve out his active duty time and get back to his civilian life. But when the Varoki launch a crippling surprise attack against the Earth coalition fleet, Sam finds himself suddenly in command of the USS Puebla.

Starting a war with an enemy 100 times stronger is insane. It’s desperate. And it’s Earth’s only hope. A massive alien power looms over humanity, claiming Earth as its territory and humanity as its slaves. The Hegemony has already taken over one colony, yoking hundreds of thousands under their brutal rule. Every tactical exercise, every war game, and every simulation gives humanity zero chance in a defensive campaign.