Siege of Kuragano
1565 CE.
Shown on the map at 36.297°, 139.048°.
The 1565 siege of Kuragano was one of many battles fought during Takeda Shingen's quest for power during Japan's Sengoku period. Kuragano castle, in Kōzuke Province, and held by Kuragano Naoyuki, withstood siege by Shingen in 1561, but fell four years later.
Text from the Wikipedia article Siege of Kuragano, licensed CC BY-SA 4.0.