Battle of Lomas Valentinas
1868 CE.
Shown on the map at -25.591°, -57.517°.
The Battle of Lomas Valentinas (also known as the Battle of Itá Ybaté) was fought in the Central Department of Paraguay on December 21–27, 1868. The Paraguayan Army, led personally by president Francisco Solano López, was decisively defeated, though López managed to escape. On 30 December 1868, the Paraguayan garrison at Angostura, with 1,907 men, surrendered to the Allies.
Text from the Wikipedia article Battle of Lomas Valentinas, licensed CC BY-SA 4.0.