Battle of Hoa Binh
1951 CE.
Shown on the map at 20.813°, 105.338°.
The Battle of Hòa Bình was fought during the First Indochina War. It occurred from 10 November 1951 to 25 February 1952, when French Union forces attempted to lure the Việt Minh out into the open and to force it to fight on French terms.
Text from the Wikipedia article Battle of Hòa Bình, licensed CC BY-SA 4.0.