Battle of Banjo
1915 CE.
Shown on the map at 6.775°, 11.818°.
During the Battle of Banjo or Battle of Banyo, British forces besieged German forces entrenched on the Banjo mountain from 4 to 6 November 1915 during the Kamerun campaign of the First World War. By 6 November much of the German force had deserted, while the rest surrendered. This led to an Entente victory, and marked the breakdown of German resistance in northern Kamerun.
Text from the Wikipedia article Battle of Banjo, licensed CC BY-SA 4.0.