Ender's Game

In order to develop a secure defense against a hostile alien race's next attack, government agencies breed child geniuses and train them as soldiers. The war with the Buggers has been raging for a hundred years, and the quest for the perfect general has been underway for almost as long. Ender Wiggin is just six years old when the planet pins their hopes on him as a future general and calls him to leave Earth for training in Battle School.