Siege of Kawagoe Castle

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Siege of Kawagoe Castle
Part of the Sengoku period
Honmaru Goten of Kawagoe Castle
Date October 1545 – May 19, 1546 Location Kawagoe Castle, Musashi Province (today, Saitama Prefecture) Result Hōjō clan victory Uesugi Tomosada killed in action Siege fails
Belligerents
Later Hōjō clan	Uesugi clan Ashikaga shogunate
Commanders and leaders
Hōjō Ujiyasu (relief commander) Hōjō Tsunashige (garrison commander) Tame Mototada Chiba Toshitane	Uesugi Tomosada † Uesugi Norimasa (Kantō Kanrei) Ashikaga Haruuji (Kantō Kubō) Various Kantō Daimyo
Strength
Garrison: 3,000 Relief: 8,000 Total: 11,000 troops	Total: 80,000 troops
Casualties and losses
Unclear, presumably minimal	13,000–16,000 killed or wounded

The 1545–1546 Siege of Kawagoe Castle (河越城の戦い, Kawagoe-jyō no tatakai) was part of a failed attempt by the Uesugi clan to regain Kawagoe Castle from the Later Hōjō clan in the Sengoku period of Japan. Uesugi Tomosada of the Ogigayatsu branch of the Uesugi clan attacking Kawagoe castle, he was joined by his more powerful relative Uesugi Norimasa from Yamanouchi branch Uesugi clan, who held the post of Kantō Kanrei, the shōgun's deputy in the Kantō region by Ashikaga Haruuji,^[1] the Kantō kubō in Koga, and by a host of anti-Hōjō daimyō from the Kantō region.