A three-way conflict among the Hōjō, Tokugawa, and Uesugi clans over former Takeda territories following Oda Nobunaga's death in 1582.
Key Facts
- Year
- 1582 (10th year of Tenshō)
- Clans Involved
- Hōjō, Tokugawa, Uesugi
- Contested Provinces
- Kai, Kōzuke, Shinano
- Peace Negotiation
- 1583
- Hōjō Representative
- Hōjō Ujinobu
- Tokugawa Representative
- Ii Naomasa
Location
Cause → Event → Consequence
The sudden death of Oda Nobunaga in 1582 created a power vacuum in central Japan. The Hōjō, Tokugawa, and Uesugi clans each sought to claim the former Takeda territories in Kai, Kōzuke, and Shinano provinces, which had recently been subdued by the Oda forces and were left without clear overlordship.
The Tenshō-Jingo War was a three-way military conflict fought in 1582 among the Hōjō, Tokugawa, and Uesugi clans. Each faction launched military operations to seize control of the former Takeda domains, resulting in a complex and fluid struggle across multiple provinces in the Kantō and central Honshū regions.
The conflict concluded through diplomatic negotiation in 1583. The Hōjō clan sent Hōjō Ujinobu and the Tokugawa sent Ii Naomasa as respective representatives to settle the dispute, ultimately redistributing influence over the contested provinces among the three clans without a decisive military victor.
Belligerents & Mobilization Analysis
Side A
1 belligerent
Ii Naomasa.
Side B
2 belligerents
Hōjō Ujinobu.