Invasion of Shikoku (1585)

Invasion of Shikoku & Siege of Ichinomiya

Hideyoshi's defeat of the Chosokabe.

Date	1585
Location	island of Shikoku, Japan
Result	Toyotomi victory; Shikoku taken.

Belligerents

forces of Toyotomi Hideyoshi

forces of Chōsokabe Motochika

Commanders and leaders

Hashiba Hidenaga
Hashiba Hidetsugu
Ukita Hideie
Mōri Terumoto
Kikkawa Motonaga
Kobayakawa Takakage

Chōsokabe Motochika

Strength

113,000 men

40,000

Campaigns of Toyotomi Hideyoshi

Anegawa Kanegasaki Odani Castle Kōzuki Castle Tedorigawa Itami Miki Tottori Takamatsu Yamazaki Uchidehama Shizugatake Komaki and Nagakute Kaganoi Takehana Kanie Toyama Negoro-ji Ōta Castle Shikoku & Ichinomiya Kyūshū Hachigata Odawara Shimoda Oshi Korea

Campaigns of the Chōsokabe clan

Tonomoto Okayama Shimantogawa Mimaomote Nakatomigawa Hiketa Shikoku & Ichinomiya Toshimitsu Kyūshū Odawara Shimoda Korea Sekigahara Osaka

Campaigns of the Mōri clan

Arita-Nakaide Koriyama Toda Oshikibata Miyajima Shiraga Gassan-Toda Moji Torisaka Tachibana Tatarahama Nunobeyama Kizugawaguchi Kōzuki Tottori Takamatsu Shikoku & Ichinomiya Kyūshū Odawara Shimoda Korea Sekigahara Osaka

In the 1585 invasion of Shikoku, Toyotomi Hideyoshi seized Shikoku, the smallest of Japan's four main islands, from Chōsokabe Motochika.

Hideyoshi's army was divided into three forces. The first, under Hashiba Hidenaga and Hashiba Hidetsugu, consisted of 60,000 men, and assaulted the provinces of Awa and Tosa, approaching Shikoku via Akashi island. The second force was led by Ukita Hideie, who led 23,000 men against Sanuki Province. The final attack force consisted of 30,000 men, and advanced on Iyo Province, led by Mōri Terumoto, Kobayakawa Takakage, and Kikkawa Motonaga. In total, it took 600 larger ships and 103 smaller ships to transport Hideyoshi's army to Shikoku.

Despite the overwhelming size of Hideyoshi's army, and the suggestions of his advisors, Chōsokabe chose to fight to defend his territories. The battles culminated in the siege of Ichinomiya Castle, which lasted for 26 days. Chōsokabe made a half-hearted attempt to relieve his castle from the siege, but surrendered in the end. He was allowed to keep Tosa province, while the rest of Shikoku was divided among Hideyoshi's generals.

References

Turnbull, Stephen (1998). The Samurai Sourcebook. London: Cassell & Co.

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