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|Siege of Tochigi Castle|
|Conflict: Campaigns of Ujiyasu Hojo|
|Place: Tochigi, Shimotsuke Province|
|Outcome: Hojo victory|
Ujiyasu Hojo's expanding clan fought the Yamanouchi clan over the Shimotsuke Province, laying siege to Tochigi, facing 45 Yamanouchi under Mitsuzumi Ijuin, with 1,469 troops. Ujiyasu's troops stormed the castle, and ruthlessly slaughtered the garrison, whose samurai retainers were butchered by the experienced Yari Ashigaru of the Hojo clan, who also utilized their superior siege towers forged in Odawara Castle. After the battle, Norimasa Yamanouchi made peace with the Hojo rather than be under their thumb.