In the history of Japan, the 1582 siege of Takatō (高遠城の戦い) was one of the final battles of the Takeda clan against the forces of Oda Nobunaga.

However, by that time their strength was very much spent by more than 10 years of war with Oda Nobunaga and Tokugawa Ieyasu, their eastern neighbors: their warriors thinly stretched in tiny garrisons over vast borders, their serfs exhausted by conscription and over-taxation, and their retainers and allies disillusioned and uncertain.

Oshima Castle further north-east fell without a fight, while villagers and lesser gentry (ji-samurai) of Shinano province flocked to Nobutada's army and greeted them as liberators.

[1] On the March 1st, Oda Nobutada's army reached the Takeda castle of Takato in eastern Shinano, which was a sturdy mountain fort protected by steep cliffs on three sides (except the rear) and the Fujisawa River that cowered eastern and northern approach: the road leading to the main gate was barely passable even to a single rider.

At the same time, Tokugawa Ieyasu burst into Kai from Suruga Province on the south, taking Takeda traitor Anayama Genba along as a guide.

Their party was overtaken and destroyed by Oda forces eight days later, in the battle of Tenmokuzan (March 11, 1582) and Takeda clan had fallen.

In the meantime, Oda Nobutada occupied old Kai capital of Kofu on March 7, 1582. and had all of Takeda Katsuyori's family, relations and house elders hunted down and executed.