Battle of Dorylaeum
1147 CE.
Shown on the map at 39.783°, 30.517°.
The second Battle of Dorylaeum took place near Dorylaeum in October 1147 during the Second Crusade. The battle consisted of a series of encounters over several days. The German Crusader forces of Conrad III were defeated by the Seljuk Turks led by Sultan Mesud I.
Text from the Wikipedia article Battle of Dorylaeum (1147), licensed CC BY-SA 4.0.