Siege of Takatō
1545 CE.
Shown on the map at 35.833°, 138.063°.
The 1545 siege of Takatō Castle, saw Takeda Shingen continuing his sweep through the Ima Valley of Shinano Province, seeking to take control of the entire province. He defeated Takatō Yoritsugu, the castellan.
Text from the Wikipedia article Siege of Takatō (1545), licensed CC BY-SA 4.0.