Ender's Shadow5 books in series
Ender's Shadow Publisher's Summary
Andrew "Ender" Wiggin was not the only child in the Battle School; he was just the best of the best. In this book, Card tells the story of another of those precocious generals, the one they called Bean, the one who became Ender's right hand, part of his team, in the final battle against the Buggers. Bean's past was a battle just to survive. His success brought him to the attention of the Battle School's recruiters, those people scouring the planet for leaders, tacticians, and generals to save Earth from the threat of alien invasion. Bean was sent into orbit, to the Battle School. And there he met Ender.