The Battle of Jaguarão was fought in the town of Jaguarão in the then province of Rio Grande do Sul, on 27 January 1865, between the Imperial Brazilian Army and a Uruguayan militia during the Uruguayan War. References Conflicts in 1865 Battles involving Brazil Battles involving Uruguay History of South America Military history of Brazil Wars involving Uruguay Jaguarão January 1865 events Battles of the Uruguayan War History of Rio Grande do Sul