Colonization: Down to Earth

In Harry Turtledove's gripping World War saga set in 1942, the Earth faces an unprecedented threat as an alien invasion disrupts the fierce global conflict between Hitler, Stalin, and the burgeoning power of America. Following a devastating nuclear assault and a fragile peace, the story unfolds in the tumultuous 1960s, where the alien Race contemplates its future amidst human turmoil. As diplomacy veers toward dangerous games, the fate of humanity hangs in the balance, with the Race possessing the ultimate weapon: the capability to annihilate all life on Earth.