The Last Battle
King Tirian and Jewel the Unicorn, while strolling through Lantern Waste, discover about Aslan's return and his commanding the Narnians to work for the Calormenes. They meet the ape there. It is widely described through the second and third chapters. It is here that the Last Battle is fought. Earlier, Tirian's grandfather had built three towers in the wood to guard it from bandits; Tirian, Eustace and Jill use one as a base before attacking Stable Hill.
Read more about this topic: Lantern Waste