Siege of Kanasa Castle
1180 CE.
Shown on the map at 36.555°, 140.465°.
The Battle of Kanasa Castle (金砂城の戦い, Kanasajō no Tatakai) began on the night of 4 November 1180 (Jishō Calendar) or 22 November 1180 (Gregorian calendar), and ended on the 5th at Kanasa Castle in Hitachi Province (near present-day Hitachi-Ōta City, Ibaraki Prefecture) between the Minamoto clan led by Minamoto no Yoritomo and the Satake clan led by Satake Hideyoshi. It ended with a Minamoto victory. The Satake clan held ties with the Taira clan, causing them to adopt an anti-Minamoto stance. After Yoritomo's victory at the Battle of Fujigawa, it was decided that rather than chase the pursuing Taira clan, the Satake should be subdued first, leading Minamoto forces to set out on 27 October and arrive at Hitachi Kokufu on 4 November. Here, Hirotsune convinced Satake Yoshimasa to come alone to the center of Ōyabashi Bridge, where he was executed. This led to some of Yoshimasa's followers bowing and surrendering or fleeing. This was quickly followed by Hideyoshi further fortifying Kanasa, which was followed by a Minamoto full-scale assault on it.
Text from the Wikipedia article Battle of Kanasa Castle, licensed CC BY-SA 4.0.