From Ender's Game
Fifty years ago an alien force known as the Formics attacked Earth. Tens of millions died. It was only through the sacrifice of our greatest commander that we avoided total annihilation. We've been preparing for them to come back ever since. The International Fleet decided that the world's smartest children are the planet's best hope. Raised on war games, their decisions are intuitive, decisive, fearless. I am one of those recruits.