Tulis hiji continuation for this paragraph - Alexander Nevsky's 1242 campaign against German and Estonian invaders is a major subject of Book 4, including the climactic Battle on the Ice (Kampungan dina És)
. tapi Baba Yaga mitos mantuan protagonis ngabela Kievan Rus '. Dina Buku 5, aksi pindah ka Perang Salib Albigensian ngalawan Catharism, jeung pengepungan 1244 Château de Montségur.