Battle of Groenkop
1901 CE.
Shown on the map at -28.236°, 28.658°.
In the Battle of Groenkop (Battle of Tweefontein) on 25 December 1901, Head Commandant Christiaan de Wet's Boer commando surprised and defeated a force of Imperial Yeomanry under the command of Major Williams.
Text from the Wikipedia article Battle of Groenkop, licensed CC BY-SA 4.0.