Battle of Whampoa
1841 CE.
Shown on the map at 23.096°, 113.397°.
The Battle of Whampoa was fought between British and Chinese forces at Whampoa Island (modern-day Pazhou Island) on the Pearl River near the city of Canton (Guangzhou), Guangdong, China, on 2 March 1841 during the First Opium War.
Text from the Wikipedia article Battle of Whampoa, licensed CC BY-SA 4.0.