Battle of Dilam
1903 CE.
Shown on the map at 23.983°, 47.151°.
The Battle of Dilam was a battle fought on 27 January 1903 between the Third Saudi State under Ibn Saud and the Emirate of Jabal Shammar under Abdulaziz bin Mutaib during the Unification of Saudi Arabia. The battle took place at Ad-Dilam, south of Riyadh, and ended in a Saudi victory.
Text from the Wikipedia article Battle of Dilam, licensed CC BY-SA 4.0.