Conflict
Combatant 1
Combatant 2
Results
Notable battles
Siege of Colonia del Sacramento (1704 - War of the Spanish Succession )[ 1]
Buenos Aires
Kingdom of Spain
Victory:
Spanish forces of the Portuguese colonial abandoned Colonia del Sacramento
Anglo-Spanish War (1796 –1808)
United Kingdom
Spanish victory
Second Banda Oriental campaign (1812-1814)
Spanish Empire
United Provinces of the Río de la Plata
United Provinces of the Río de la Plata victory
Portuguese conquest of the Banda Oriental (1816–1820)
United Kingdom of Portugal, Brazil and the Algarves
Luso-Brazilian victory
War of Independence of Brazil (1822 - 1825)
Kingdom of Portugal
Empire of Brazil
Brazilian victory
Cisplatine War (1825–1828)
Río de la Plata Thirty-Three Orientals
Brazil
Stalemate
Uruguayan Civil War (1839–1852)
Colorados Unitarians Brazil Entre Ríos Corrientes France United Kingdom
Blancos Argentina Federalists
Colorado victory
Imposition of the Colorados in Uruguay
Platine War (1845–1852)
Brazil Uruguay Paraguay Argentine Rebels
Argentina
Victory
Argentine clout over the Platine region ends
Brazilian hegemony in the Platine region
Uruguayan War (1864–1865)
Uruguay Blancos Federalists
Brazil Colorados Unitarians Argentina
Defeat
Colorados takeover, regime change in Uruguay
Paraguayan War (1864–1870)
Brazil Argentina Uruguay
Paraguay
Victory
Allied occupation of Paraguay
Revolution of the Lances (1870–1872)
Colorados
Blancos
Blanco victory
Agreement of power-sharing reached
Revolution of 1904 (1904)
Colorados
Blancos
Colorado victory
World War II (1945)
United States Soviet Union United Kingdom China France Poland Canada Australia New Zealand India South Africa Yugoslavia Greece Denmark Norway Netherlands Belgium Luxembourg Czechoslovakia Brazil Mexico Chile Bolivia Colombia Ecuador Paraguay Peru Venezuela Uruguay Argentina
Germany Japan Italy Hungary Romania Bulgaria Croatia Slovakia Finland Thailand Manchukuo Mengjiang
Victory