Ender defeats Phoenix Army (Petra's army)

Dragon Army is scheduled to fight Phoenix Army, commanded by Petra Arkanian, Ender's former friend. The battle is more challenging, as Petra is a skilled commander, but Ender's tactics prevail. The victory is not as clean as the first, with more losses, but it is still a win. Petra is angry and humiliated, and Ender feels the loss of their friendship. The battle demonstrates that Ender can adapt to different opponents and that his army is becoming more experienced.