Trebizond Campaign
1916 CE.
Shown on the map at 41.005°, 39.721°.
The Trebizond Campaign, also known as the Battle of Trebizond, was a series of successful Russian naval and land operations that resulted in the capture of Trabzon. It was the logical step after the Erzerum Campaign. Operations began on February 5 and concluded when the Ottoman troops abandoned Trabzon on the night of April 15, 1916.
Text from the Wikipedia article Trebizond Campaign, licensed CC BY-SA 4.0.