After Dragon army's first practice that morning, Ender doesn't go to classes.  He stays, planning what his army needs to work on the most, etc.  He goes to go to one of his evening practice sessions, and when he gets to the battleroom, he finds Major Anderson there.  Anderson tells him that they have changed the rules so people can only practice during the times scheduled, and only with their own armies.  Ender is angered by this, and after hiss regular practice4 with his army, he goes to the game room, not knowing what to do.  

    There he sees Alai, his old friend from his launch group.  They exchange friendly talk, although both of them know that they can never be the friends that they were before.  Alai says that Ender will never find peace, which is all that Ender has been fighting for his entire life.  They leave, and Ender realizes that Alai was the only person besides Valentine that he would truly miss.  He vows to show the teachers that they can take away his friends, his family, but they can't break him.