List of battles of the Paraguayan War

Paraguayan War
Date 1864–1870 Location South America Result Allied victory
Belligerents
Allied Forces: • Brazilian Empire, • Argentina Confederation, • Republic of Uruguay	Republic of Paraguay
Strength
160,000 Brazilians; 60,000 Argentines and 5,000 Uruguayans	100,000 to 120,000
Casualties and losses
90,000 to 100,000 among civilians and soldiers	300,000 to 400,000 among civilians and soldiers

• Battle of the Riachuelo – 11 June 1865
• Battle of Paso de Mercedes - 11 August 1865
• Battle of Paso de Cuevas - 12 August 1865
• Battle of Yatay – 17 August 1865
• Battle of Pehuajó or Corrales or Itati - 31 January 1866
• Battle of Estero Bellaco – 2 May 1866
• Battle of Tuyutí or Tuiutí – 24 May 1866
• Battle of Boquerón - 16 July 1866
• Battle of Curuzú - 1–3 September 1866
• Battle of Curupayty – 22 September 1866
• Battle of Tatayibá - 21 October 1867
• Battle of Potrero Obella - 28 October 1867
• Battle of Tuyutí (second) - 3 November 1867
• Siege of Humaitá – November, 1866 until August 1868
• Battle of Ytororó or Itororó – 6 December 1868
• Battle of Avay or Avahy – 11 December 1868
• Pikysyry maneuver - 21 December 1868
• Battle of Lomas Valentinas or Ita Ybate – 21–27 December 1868, fought in two days.
• Battle of Piribebuy or Peribebuí – 12 August 1869
• Battle of Acosta Ñu or Campo Grande – 16 August 1869
• Battle of Cerro Corá – 1 March 1870