Siege of Koriyama

Siege of Koriyama
	Part of the Sengoku period
Date	September 1540 to February 1541
Location	Yoshida, Aki Province, Japan
Result	Mōri victory
Belligerents
Amago clan	Mōri clan; Ōuchi clan
Commanders and leaders
Amago Haruhisa; Amago Hisayuki†; Kamei Hidetsuna; Kikkawa Okitsune; Kokushou Hisazumi; Misawa Tameyuki†; Takahashi Mototsuna†; Takao Hisatomo; Yonehara Tsunahiro; Yubara Munetsuna†	Mōri Motonari; Kunishi Motosuke; Awaya Motoyoshi; Awaya Motozane; Katsura Motozumi; Kodama Narimitsu; Watanabe Kayou; ; Relief forces:; Sue Harukata
Strength
30,000	18,000 total; (8,000 Mori; 10,000 Ōuchi relief force)

Siege of Koriyama (吉田郡山城の戦い, Yoshida Kōriyama no tatakai) took place from 5 October 1540 (6th day of 9th month of Tenbun 9) until 8 February 1541 (13th day of 1st month of Tenbun 10) in Yoshida, Aki Province, Japan during the Sengoku period. Amago Haruhisa, with 30,000 men, attacked Kōriyama Castle, which belonged to Mōri Motonari and was defended by 8,000 men. When the Ōuchi clan sent an army under the command of Sue Harukata to relieve the siege, the Amago were forced to leave.

^ Turnbull, Stephen (1998). The Samurai Sourcebook. Cassell & Co. p. 209. ISBN 1854095234.
^ Yamamoto, Hiroki (2007). Saigoku no sengoku kassen. Tokyo: Yoshikawa Kōbunkan. p. 291. ISBN 978-4642063227.

[Turnbull2-1] Turnbull, Stephen (1998). The Samurai Sourcebook. Cassell & Co. p. 209. ISBN 1854095234.

[Saigoku_no_sengoku_kassen-2] Yamamoto, Hiroki (2007). Saigoku no sengoku kassen. Tokyo: Yoshikawa Kōbunkan. p. 291. ISBN 978-4642063227.

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