INTERACTIVE BATTLE
Battle of Yamanaka Castle
29 March 1590 · Yamanaka Castle
The Toyotomi army attacked Yamanaka Castle, a Later Hōjō stronghold guarding the route to Odawara, and captured it within half a day.
Course of the battle
1 29 March 1590
Toyotomi forces launch a general assault
Advancing toward Odawara, Toyotomi forces attacked Yamanaka Castle from several directions. The Later Hojo had been strengthening this western approach through Hakone.
Sources12345·Certainty: High
2 29 March 1590
Fighting spreads from the outworks to the main enclosure
Fighting spread from the Daisaki outwork and western sector toward the inner enclosures. Matsuda Yasunaga on the Hojo side and Hitotsuyanagi Naosue among the attackers were killed.
Sources12345·Certainty: High
3 The same day
Yamanaka Castle falls
Yamanaka Castle fell quickly and the Toyotomi army continued across Hakone toward Odawara. Exact troop totals, duration, and routes assigned to each contingent remain uncertain.
Points of debate
Troop totals, duration, and attack routes are disputed.
Sources12345·Certainty: High
Other events of 1590
Sources consulted
- 三島市「山中城跡」
- 三島市郷土資料館「山中城の合戦後の勘兵衛」
- 三島市「山中城跡（国指定文化財「史跡」）」
- 三島市「戦国・安土桃山時代」
- 静岡県「しずおか文化財ナビ 山中城跡」
The numbers in the text refer to the list above. Certainty indicates how far a statement is supported by the cited sources; it does not refer to the precision of the coordinates or the dating.
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