'Tarzan the Untamed' is a book written by Edgar Rice Burroughs, related to the title character Tarzan. The time is of World War I in this novel. World War I provokes East Africa as German troops destroy the Greystokes' estate where Tarzan come back to obtain the burned ashes of his beloved Jane. Another casualty is the Waziri warrior Wasimbu, left killed by the Germans. Engrossed by revenge, the ape-man wages guerrilla warfare against the enemy, using his most wild tactics to help the Allies manage the captures from his land. As the British Army triumphs, Tarzan leaves to rejoin the great apes that are his family_ only to be opposed by a rashless wasteland that stands in his way. Having furnished a trial of unbelievable torment, he enters the inaccessible valley of xuja, the city of maniacs.