âThe Last Battleâ by CS Lewis concludes the Narnia series of novels. The story takes place 2500 Narnian years since the creation of the world as related in âThe Magician's Nephewâ. The ape Shift sets up a false Aslan, starts to order his fellow Narnians around and causes conflict between true and false Narnians, and between Narnia and Calormen, whose people worship the malevolent Tash. With its dark imagery and sinister undertone, âThe Last Battleâ seems to be more of an adultâs book than a childrenâs book. The story concludes with the termination of the world by Aslan, and the entry of believers into eternal life in the final kingdom. âThe Last Battleâ won the 1956 Carnegie Medal from the Library Association.