Battle of Dojran
1913 CE.
Shown on the map at 41.180°, 22.723°.
The Battle of Doiran was a battle of the Second Balkan War, fought between the Bulgaria and Greece. The battle took place in June 1913. The Hellenic Army, after the victory at Kilkis-Lachanas, continued their advance north and successfully engaged the Bulgarians at Lake Doiran. The Bulgarian army had retreated to the lake, after having destroyed the bridges of Strymon River and burned the town of Serres. As a result of their subsequent defeat, the Bulgarian forces retreated further north.
Text from the Wikipedia article Battle of Doiran (1913), licensed CC BY-SA 4.0.