Paraguayan War
November 12, 1864 – March 1, 1870 · Battle site
Result Allied victory
Paraguay under Francisco Solano López fought the Triple Alliance of Brazil, Argentina and Uruguay. The war ended with López's death at Cerro Corá and the loss of a large part of Paraguay's population.
Triple Alliance
Paraguay
Other
Pedro II of Brazil
belligerent leader
Luís Alves de Lima e Silva, Duke of Caxias
military commander
Prince Gaston, Count of Eu
military commander
Bartolomé Mitre
military commander
Domingo Faustino Sarmiento
military commander
Venancio Flores
military commander
Manuel Luís Osório, Marquis of Erval
military commander
Joaquim Marques Lisboa
military commander
Strength and losses
Empire of Brazil Strength c. 139,000 · Killed c. 100,000
Argentina Strength c. 30,000 · Killed c. 10,000
Uruguay Strength 5,583 · Casualties 10,000
- Strength
- 300,000
Paraguay Killed c. 200,000
- Killed
- c. 310,000
- Deaths
- 150,000–500,0001,000,000
Battles and events 28
Key events
-
Mato Grosso campaign December 1864 – April 1868 · Initial Paraguayan conquest; Paraguayan withdrawal
- Retreat from Laguna January 2, 1868 · Paraguayan victory
- Treaty of the Triple Alliance May 1, 1865
- Battle of Riachuelo June 11, 1865 · Brazilian victory
- Siege of Uruguaiana July 16 – September 18, 1865 · Allied victory, Paraguayan surrender on 18 September
- Battle of Estero Bellaco May 2, 1866 · Allied victory
- Battle of Tuyutí May 24, 1866 · Allied victory
- Battle of Boquerón (1866) July 16–18, 1866 · Paraguayan victory
- Battle of Curuzú September 1–3, 1866 · Allied victory
- Battle of Curupayty September 22, 1866 · Paraguayan victory
- Battle of Lomas Valentinas December 21–27, 1868 · Allied victory
- Battle of Acosta Ñu August 16, 1869 · Allied victory
- Battle of Cerro Corá March 1, 1870 · Brazilian victory
1864
-
Mato Grosso campaign December 1864 – April 1868 · Initial Paraguayan conquest; Paraguayan withdrawal
- Retreat from Laguna January 2, 1868 · Paraguayan victory
1865
- Treaty of the Triple Alliance May 1, 1865
- Battle of Riachuelo June 11, 1865 · Brazilian victory
- Siege of Uruguaiana July 16 – September 18, 1865 · Allied victory, Paraguayan surrender on 18 September
- Battle of Paso de Mercedes July 18, 1865 · Brazilian victory
- Battle of Paso de Cuevas August 12, 1865 · Allied victory
- Battle of Yatay August 17, 1865 · Allied victory
1866
- Battle of Pehuajó January 31, 1866 · Paraguayan victory
- Humaitá campaign April 16, 1866 – August 5, 1868 · Allied victory
- Battle of Estero Bellaco May 2, 1866 · Allied victory
- Battle of Tuyutí May 24, 1866 · Allied victory
- Battle of Boquerón (1866) July 16–18, 1866 · Paraguayan victory
- Battle of Curuzú September 1–3, 1866 · Allied victory
- Battle of Curupayty September 22, 1866 · Paraguayan victory
1867
- Passage of Curupayty (1867) August 15, 1867 · Brazilian Navy/Allied victory
- Second Battle of Tuyutí November 3, 1867 · Allied victory
1868
- Passage of Humaitá February 19, 1868 · Brazilian victory
- Assault on the battleships Cabral and Lima Barros March 2, 1868 · Brazilian victory
- Battle of Acayuazá July 18, 1868 · Paraguayan victory
- Pikysyry campaign August 1868 – January 1869 · Allied victory
- Battle of Ytororó December 6, 1868 · Brazilian victory
- Battle of Avay December 11, 1868 · Brazilian victory
- Battle of Lomas Valentinas December 21–27, 1868 · Allied victory
- 1868 San Fernando massacre December 21, 1868
1869
- Campaign of the Hills June 1869 – March 1, 1870 · Allied victory
- Battle of Piribebuy August 12, 1869 · Brazilian victory
- Battle of Acosta Ñu August 16, 1869 · Allied victory
1870
- Battle of Cerro Corá March 1, 1870 · Brazilian victory
Before and after
- Led to
- Loizaga–Cotegipe Treaty January 9, 1872
Machaín-Irigoyen Treaty February 3, 1876
Related events
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
Paraguayan War
