Shinano Province

[1] Shinano bordered Echigo, Etchū, Hida, Kai, Kōzuke, Mikawa, Mino, Musashi, Suruga, and Tōtōmi Provinces.

[citation needed] In 713, the road that traverses Mino and Shinano provinces was widened to accommodate increasing numbers of travelers through the Kiso District of modern Nagano Prefecture.

[2] In the Sengoku period, Shinano Province was often split among fiefs and castle towns developed, including Komoro, Ina, and Ueda.

During the Azuchi–Momoyama period, after Nobunaga's assassination at Honnō-ji Incident, the province was contested between Tokugawa Ieyasu and the Go-Hōjō clan based in Odawara castle.

Following of disorder post death of Nobunaga, at the same time with Ieyasu departure an army of 8,000 soldiers to those disputed region.