Battle of Ichi-no-Tani
1184 CE.
Shown on the map at 34.640°, 135.105°.
The Battle of Ichi-no-Tani (一ノ谷の戦い, Ichi-no-Tani no tatakai) was fought between the attacking Minamoto clan and the defending Taira clan at Suma, to the west of present-day Kobe, Japan, on 20 March 1184. It sat on a very narrow strip of shore, between mountains on the north, and the sea to the south. This made it quite defensible, but also made it difficult to maneuver troops inside the fortress. The Taira suffered a crucial defeat to the forces of Minamoto no Yoshitsune and Minamoto no Noriyori.
Text from the Wikipedia article Battle of Ichi-no-Tani, licensed CC BY-SA 4.0.