Viceroyalty of Peru
The Battle of Huaqui (in some sources also called Guaqui, Yuraicoragua or Battle of Desaguadero), was a battle between the Primera Junta's (Buenos Aires) revolutionary troops and the royalist troops of the Viceroyalty of Peru on the border between Upper Peru, (present-day Bolivia), and the Viceroyalty of Peru on June 20, 1811.