Battle of Port Arthur
1904 CE.
Shown on the map at 38.775°, 121.265°.
The Battle of Port Arthur (Japanese: 旅順口海戦, Hepburn: Ryojunkō Kaisen) of 8–9 February 1904 marked the commencement of the Russo-Japanese War. It began with a surprise night attack by a squadron of Japanese destroyers on the neutral Russian fleet anchored at Port Arthur, Manchuria, and continued with an engagement the following morning; further skirmishing off Port Arthur would continue until May 1904. The attack ended inconclusively.
Text from the Wikipedia article Battle of Port Arthur, licensed CC BY-SA 4.0.