The siege of Kaminoyama took place in 1600, at the end of Japan's

Sengoku period The was a period in History of Japan, Japanese history of near-constant civil war and social upheaval from 1467 to 1615. The Sengoku period was initiated by the Ōnin War in 1467 which collapsed the Feudalism, feudal system of Japan under the ...

. It was one of many battles making up the

Sekigahara Campaign The Sekigahara Campaign was a series of battles in Japan fought between the Eastern Army aligned with Tokugawa Ieyasu and the Western Army loyal to Ishida Mitsunari, culminating in the decisive Battle of Sekigahara. The conflict was sparked ...

, in which

Tokugawa Ieyasu was the founder and first ''shōgun'' of the Tokugawa Shogunate of Japan, which ruled Japan from 1603 until the Meiji Restoration in 1868. He was one of the three "Great Unifiers" of Japan, along with his former lord Oda Nobunaga and fellow ...

eliminated the last opposition to his domination of the Japanese islands. Honmura Chikamori and Yokota Munetoshi, commanders under

Naoe Kanetsugu was a Japanese samurai of the 16th–17th centuries. The eldest son of Higuchi Kanetoyo, Kanetsugu was famed for his service to two generations of the Uesugi ''daimyōs''. He was also known by his court title, Yamashiro no Kami (山城守) or ...

, led 4,000 men against the castle of

Kaminoyama 250px, Hayama neighborhood in Kaminoyama is a city located in Yamagata Prefecture, Japan. , the city had an estimated population of 29,617 in 11278 households, and a population density of 120 persons per km2. The total area of the city is . G ...

in Yamagata province while Naoe led another division towards the province. Kaminoyama was held by Satomi Minbu, a retainer of the

Mogami clan were Japanese ''daimyōs'', and were a branch of the Ashikaga family. In the Sengoku period, they were the Sengoku ''daimyōs'' who ruled Dewa Province which is now Yamagata Prefecture and part of Akita Prefecture. The Mogami clan is derived ...

which was aligned with Tokugawa. Honmura was killed in the fighting, but in the end the castle fell to the Uesugi forces.

References

*Turnbull, Stephen (1998). 'The Samurai Sourcebook'. London: Cassell & Co. 1600 in Japan

Conflicts in 1600 {{Japan-battle-stub