The First Formic War books by Orson Scott Card, co-authored with Aaron Johnston, is a prequel trilogy to the Ender's Game series. It details humanity's first encounter with the alien Formics, a devastating insectoid race that invades Earth. The story follows a group of determined characters, including military leaders and civilian heroes, as they unite to fight against the overwhelming alien threat. As Earth faces annihilation, the trilogy explores themes of survival, sacrifice, and the complexities of human nature under extreme pressure. The books blend intense action with strategic warfare, laying the groundwork for the future events of Ender's Game.