Battle of Utsunomiya Castle
1868 CE.
Shown on the map at 36.555°, 139.885°.
The Battle of Utsunomiya Castle (宇都宮城の戦い, Utsunomiyajō no tatakai) took place between pro-imperial and Tokugawa shogunate forces during the Boshin War in Japan in May 1868 at Utsunomiya Castle. It occurred as the troops of the Tokugawa shogunate were retreating north towards Nikkō and Aizu.
Text from the Wikipedia article Battle of Utsunomiya Castle, licensed CC BY-SA 4.0.