Siege of Paysandú
1864 CE.
Shown on the map at -32.320°, -58.076°.
The Siege of Paysandú began on 3 December 1864, during the Uruguayan War, when Brazilian forces (under the Marquis of Tamandaré) and Colorado forces (under Venancio Flores) attempted to capture the city of Paysandú in Uruguay from its Uruguayan Army defenders. The siege ended on 2 January 1865, when the Brazilian and Colorado forces conquered the town.
Text from the Wikipedia article Siege of Paysandú, licensed CC BY-SA 4.0.