Set in the same universe as the Worldwar series, the Colonization series brings us to Earth in the 1960s, where four superpowers rule: the United States, Russia, Nazi Germany, and the aliens of the Race.

In 1942, Hitler led the world's most savage military machine. Stalin ruled Russia while America was just beginning to show its strength in World War II. Then, in Harry Turtledove's brilliantly imagined Worldwar saga, an alien assault changed everything. Nuclear destruction engulfed major cities, and the invaders claimed half the planet before an uneasy peace could be achieved.

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.

At the bloody height of World War II, the deadliest enemies in all of human history were forced to put aside their hatreds and unite against an even fiercer foe: a seemingly invincible power bent on world domination. With awesome technology, the aggressors swept across the planet, sowing destruction as Tokyo, Berlin, and Washington, D.C., were A-bombed into submission.

The invaders had cut the United States virtually in half at the Mississippi, vaporized Washington, D.C., devastated much of Europe, and held large parts of the Soviet Union under their thumb. But humanity would not give up so easily....