Battle of Kardzhali
1912 CE.
Shown on the map at 41.650°, 25.367°.
The Battle of Kircaali or Battle of Kardzhali was part of the First Balkan War between the armies of Bulgaria and the Ottoman Empire. It took place on 21 October 1912, when the Bulgarian Haskovo Detachment defeated the Ottoman Kırcaali Detachment of Yaver Pasha and permanently joined Kardzhali and the Eastern Rhodopes to Bulgaria. The anniversary of that event is celebrated annually on 21 October as a holiday of the city.
Text from the Wikipedia article Battle of Kardzhali, licensed CC BY-SA 4.0.