Capture of Chusan
1840 CE.
Shown on the map at 30.007°, 122.107°.
The First Capture of Chusan (Chinese: 第一次定海之戰) by British forces in China occurred on 5–6 July 1840 during the First Opium War. The British captured Chusan (Zhoushan), the largest island of an archipelago of that name.
Text from the Wikipedia article Capture of Chusan, licensed CC BY-SA 4.0.