Machines soared through the air, churned through the seas, crawled across the surface, pushing ever forward, carrying death. Earth was engaged in titanic struggle. Germany, Russia, France, China, Japan: the maps were changing day by day. The hostilities spread in ever-widening ripples of destruction: Britain, Italy, Africa...The fate of the world hung in the balance. Then the real enemy came. Out of the dark of night, out of the soft glow of dawn, out of the clear blue sky came an invasion force the likes of which Earth had never known - and worldwar was truly joined. The invaders were inhuman and they were unstoppable. Their technology was far beyond our reach, and their goal was simple. Fleetlord Atvar had arrived to claim Earth for the Empire. Never before had Earth's people been more divided. Never had the need for unity been greater. And grudgingly, inexpertly, humanity took up the challenge. In this epic novel of alternate history, Harry Turtledove takes us around the globe. We roll with German panzers; watch the coast of Britain with the RAF; and welcome alien-liberators to the Warsaw ghetto. In tiny planes we skim the vast Russian steppe, and we push the envelope of technology in secret labs at the University of Chicago. Turtledove's saga covers all the Earth, and beyond, as mankind - in all its folly and glory - faces the ultimate threat; and a turning point in history shows us a past that never was and a future that could yet come to be...

    allies. The 11,000+ humans remaining in the Universe are desperately trying to remain undiscovered by their xenophobic alien adversaries while they attempt to rebuild a viable military defense and discover how they're receiving messages from the future. But Humans have now been contacted by a third alien race that says they want to help and tells the Humans that the xenophobic aliens aren't the REAL enemy. The real enemy is a life form that has a nightmarish biology and is a threat to the entire galaxy. What can 11,000 humans do that two other alien races can't do? How will two very special A.I.s ultimately decide the fate of their creators and who will pay the ultimate price for their loyalty? This hard hitting military SF series about desperate space battles and the warriors who fight in them continues in Part 3 and will be concluded in Part 4(expected to be published in June of 2014) The paperback version of Part 3 is now available on createspace.com.

    Cassandra is an experimental design — more intelligent, more creative, and far more dangerous than any that have preceded her. But with her intellect come questions, and a moral awakening. She deserts the League and heads incognito into the space of her former enemy, the Federation, in search of a new life. Her chosen world is Callay, and its enormous, decadent capital metropolis of Tanusha, where the concerns of the war are literally and figuratively so many light years away. But the war between the League and the Federation was ideological as much as political, with much of that ideological dispute regarding the very existence of artificial sentience and the rules that govern its creation. Cassandra discovers that even in Tanusha, the powerful entities of this bloody conflict have wound their tentacles. Many in the League and the Federation have cause to want her dead, and Cassandra’s history, inevitably, catches up with her. Cassandra finds herself at the mercy of a society whose values preclude her own right even to exist. But her presence in Tanusha reveals other fault lines, and when Federal agents attempt to assassinate the Callayan president, she finds herself thrust into the service of her former enemies, using her lethal skills to attempt to protect her former enemies from forces beyond their ability to control. As she struggles for her place and survival in a new world, Cassandra must forge new friendships with old enemies, while attempting to confront the most disturbing and deadly realities of her own existence

    They came to destroy us. Fifty years ago, bloodthirsty aliens devastated the Earth. Most of humanity perished. We fell into darkness. But now we rise from the ashes. Now we fight back. Marco Emery was born into the war. After his mother is killed, he joins the Human Defense Force, Earth's ragtag army. Emery must survive basic training, become a soldier, and finally face the aliens in battle. Against the alien onslaught, Earth stands alone. But we will fight. We will rise. We will win.

    Three generations of its warriors have gone off to war, held the line against the larger, more powerful enemy. Now the fourth conflict is imminent, and the Confederation’s navy is on alert, positioned behind the frontier, waiting for the attack it knows is coming. The battleship Dauntless has spent the past ten months patrolling the border, deployed far forward of the main fleet, a forlorn hope, an advance guard positioned to give the warning of invasion. But no attack has come. Her crew is exhausted, and the aging battleship needs maintenance. With the fleet mobilized and the forward bases overloaded beyond capacity, she is sent clear across the Confederation, to a planet along the quiet and peaceful far frontier. Her crew is looking forward to a rest, and Dauntless herself is scheduled for a long-overdue maintenance session. But the quiet frontier isn’t what it seems…and when a distress call is received from one of the mining colonies on the edge of Confederation space, it falls to Captain Tyler Barron to take Dauntless forward, to find out what is happening, and to put a stop to it. Barron and his crew have their ship—and each other—but they can expect no other help. Suspicion is strong that Union deceit is at play, that the attack is some sort of diversion, intended to draw Confederation forces from the disputed border. The orders are clear. No ships will be transferred from the prospective battle line. Stopping whatever is happening on the rim is Barron’s responsibility, and his alone. Barron is the grandson of the Confederation’s great hero, the father of the modern navy. His family name has always carried privilege with it, and crushing responsibility. And now he must prove that he has inherited more from his famous grandfather than name and privilege. He must face the enemy, and win the victory…before the Confederation is caught between two enemies and destroyed. Blood on the Stars Reading Order Book 1: Duel in the Dark Book 2: Call to Arms (January 2017, Available now for preorder)

    For Junior Lieutenant Michael Helfort and the crew aboard deep space scout vessel 387, the mission is clear: infiltrate enemy territory, locate the Mumtaz, and rescue the prisoners.The odds are appalling, and the damage will probably be fatal, but victory is nonnegotiable–especially for Helfort, whose mother and sister were on the Mumtaz. And Michael Helfort will be damned if he’ll let his family rot on the moons of Hell.

    A new first officer reports, Wilson Cole, a man with a reputation for exceeding his orders (but getting results). He's been banished to the Teddy R. for his actions, but once there he again ignores his orders. ...This is the first of five novels about the starship Theodore Roosevelt. The next four will be, in order, Pirate, Mercenary, Rebel, and Flagship.

    AN UNKNOWABLE THREAT APPROACHES EARTH . . . AND WE ARE COMPLETELY UNPREPARED TO FACE WHAT'S COMING. Aerospace tycoon Gordon Elliot Lee cannot stand idly by while a mysterious alien presence from Delta Pavonis bears down upon mankind's only home. Shut out from NASA and military support, Gordon is forced to go it alone, to sow the seeds for an entirely new sort of planetary defense: a space-based naval force. Joined by Nathan Kelley -- a bloodied naval warrior, scarred by his own actions in the waters off North Korea -- and Kris Munoz -- an avant garde scientific genius with more ideas than sense -- these three will scour the very edges of fringe science and engineering to attempt development of Earth's first space navy in time to oppose the Deltan invasion. Beset by ridicule, government obstruction, industrial espionage, and their own personal demons, it will take a miracle just to get off the ground. But the challenges on Earth are nothing compared to what awaits them in space. Against an unknown alien enemy with vastly superior technology, a handful of human scientists and warriors must become the sword that holds the darkness at bay. MISSILES WILL FLASH, RAILGUNS WILL RUMBLE, LASERS WILL BURN, AND DEFENDERS WILL DIE. IF THEY FAIL, OUR END IS AT HAND.

    But they also found themselves up against creatures who considered humans mere cattle to sacrifice!

    But the Shaa will soon be no more. The dread empire is in its rapidly fading twilight, and with its impending fall comes the promise of a new galactic order... and bloody chaos.A young Terran naval officer marked by his lowly birth, Lt. Gareth Martinez is the first to recognize the insidious plot of the Naxid -- the powerful, warlike insectoid society that was enslaved before all others -- to replace the masters’ despotic rule with their own. Barely escaping a swarming surprise attack, Martinez and Caroline Sula, a pilot whose beautiful face conceals a deadly secret, are now the last hope for freedom for every being who ever languished in Shaa chains -- as the interstellar battle begins against a merciless foe whose only perfect truth is annihilation.

    The Last Watch, where a handful of soldiers stand between humanity and annihilation.The Divide.It’s the edge of the universe.Now it’s collapsing—and taking everyone and everything with it.The only ones who can stop it are the Sentinels—the recruits, exiles, and court-martialed dregs of the military.At the Divide, Adequin Rake, commanding the Argus, has no resources, no comms—nothing, except for the soldiers that no one wanted.They're humanity's only chance.

    Long after interstellar civilization collapsed, Battle Central, a sentient computer, selected a young military officer to restore its fallen glory by conquering a planet -- and then re-conquering the stars.

    David Gunn is loaded–and he shoots to kill.At the top of the galactic pecking order is the United Free, a civilization of awe-inspiring technological prowess so far in advance of other space-faring powers as to seem untouchable gods. Most of the known universe has fallen under their inscrutable sway. The rest is squabbled over by two empires: one ruled with an iron fist by OctoV, a tyrant who appears to his followers as a teenage boy but is in reality something very different, the other administered by the Uplifted, bizarre machinelike intelligences, and their no-longer-quite-human servants, cyborgs known as the Enlightened.Sven Tveskoeg, an ex-sergeant demoted for insubordination and sentenced to death, is a vicious killer with a stubborn streak of loyalty. Sven possesses a fierce if untutored intelligence and a genetic makeup that is 98.2 percent human and 1.8 percent . . . something else. Perhaps that “something else” explains how quickly he heals from even the worst injuries or how he can communicate telepathically with the ferox, fearsome alien savages whose natural fighting abilities regularly outperform the advanced technology of their human enemies. Perhaps it is these unique abilities that bring Sven to the attention of OctoV.Drafted into the Death’s Head, the elite enforcers of OctoV’s imperial will, Sven is given a new lease on life. Armed with a SIG diabolo–an intelligent gun–and an illegal symbiont called a kyp, Sven is sent to a faraway planet, the latest battleground between the Uplifted and OctoV. There he finds himself in the midst of a military disaster, one that will take all his courage–and all his firepower–to survive. But an even deadlier struggle is taking place, a struggle that will draw the attention of the United Free. Sven knows he is a pawn, and pawns have a bad habit of being sacrificed.But Sven is nobody’s sacrifice. And even a pawn can checkmate a king.From the Hardcover edition.

    Humanity has a chance. In the near future, an alien probe arrives on Earth with a pivotal mission—help humanity survive an impending invasion by an alien armada so massive it can blot out the stars, or leave the human race to certain extinction. Despite overwhelming odds, the probe recruits a young inventor named Marc Ibarra to plan a daring gambit. To weather the coming storm, Ibarra must build a space fleet strong enough to face an implacable foe in a battle against annihilation.

    But ensuring survival means choosing which orders to obey-and which to ignore.