Ender defeats Salamander Army (Bonzo's army) with shield tactic

In a battle against Salamander Army, commanded by Bonzo Madrid, Ender uses a new tactic: using frozen soldiers as shields. He has his soldiers form human shields, with a shooter hiding behind a frozen boy, and they launch through the door, catching the enemy off guard. The battle is won quickly, but Ender is angry because the teachers had stacked the odds against him, giving Bonzo advance notice and no stars. The victory further enrages Bonzo, who feels humiliated, and sets the stage for the bathroom confrontation.