1546: Battle of Kawagoe—Hōjō Ujiyasu Defeats the Allied Army
Hōjō Ujiyasu's relief force defeated the allied Uesugi and Koga Ashikaga army besieging Kawagoe Castle. Ōgigayatsu Uesugi Tomosada was killed, greatly advancing Hōjō power in the Kantō. Traditionally called the Night Battle of Kawagoe, Kawagoe City notes that recent study questions whether it was actually fought at night.
Events this year
Month 4
Battle of Kawagoe
Hōjō Ujiyasu's relief force defeated the allied Uesugi and Koga Ashikaga army besieging Kawagoe Castle, and Ōgigayatsu Uesugi Tomosada was killed.
See this battle in detail →Hōjō Ujiyasu・Later Hojo commander in chief; led the night attackUesugi Tomosada・Besieging force; killed in battleUesugi Norimasa・Yamanouchi Uesugi side in the besieging army
Sources 川越市「川越市の歴史 中世」／川越市「県指定記念物 川越城跡」／川越市「川越の歴史年表」／川越市「河越夜戦跡」
Month unknown
Mōri Takamatsu Succeeds to Headship
Mōri Motonari transferred the headship to his eldest son Takamatsu. Even after stepping down, Motonari retained actual authority over military and diplomatic matters.