Atlas of Battles

siege, nineteenth century

Siege of Uruguaiana

Siege of Uruguaiana was a siege conducted in September 1865 at Uruguaiana, in what is now Brazil. It was part of the Paraguayan War, which ran from 1864 to 1870. The recorded result: Allied victory, Paraguayan surrender on 18 September. Recorded strength: 8,000 men; 8 guns against 17,346 men; 54 guns; 6 steamers (Imperial Brazilian Navy).

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Surrender of Uruguaiana during the War of the Triple Alliance, 1865.
Surrender of Uruguaiana during the War of the Triple Alliance, 1865.. Victor Meirelles, Public domain, via Wikimedia Commons.
FoughtSeptember 1865
WhereUruguaiana, Brazil29.755S, 57.088W
OutcomeAllied victory, Paraguayan surrender on 18 September
BelligerentsParaguayagainstEmpire of Brazil; Argentina; Uruguay
Part ofParaguayan War1864 to 1870

Where it sits in the Paraguayan War

Battle of Corrientes, 1865Invasion of Rio Grande do Sul, 1865Battle of Riachuelo, 1865Battle of Paso de Mercedes, 1865Battle of Paso de Cuevas, 1865Battle of Yatay, 1865Siege of Uruguaiana, 1865Battle of Corrales, 1866Battle of Estero Bellaco, 1866Battle of Tuyutí, 1866Battle of Boquerón, 1866Battle of Curupaity, 1866Siege of Curupaiti, 1867Siege of Humaitá, 1867Second Battle of Tuyutí, 1867Battle of Lomas Valentinas, 1868Passage of Humaitá, 1868Assault on the battleships Cabral and Lima Barros, 1868Battle of Acayuazá, 1868Battle of Ytororó, 1868Pikysyry maneuver, 1868Battle of Piribebuy, 1869Victoria de paraguay, 1869Battle of Cerro Corá, 187018651870Siege of Uruguaiana, 1865
24 placed engagements of the Paraguayan War in time order; taller ticks are more widely documented. Each tick is a link.

Record

DateSeptember 1865 (month precision)
to 18 September 1865
PlaceUruguaiana, Brazil
29.755S, 57.088W
KindSiege, nineteenth century
Strength8,000 men; 8 guns17,346 men; 54 guns; 6 steamers (Imperial Brazilian Navy)
Casualties and losses5,545 surrendered, the rest of the force had died from starvation and disease4,796 killed; 3,415 wounded; 11 guns destroyed; 1 steamer sunk
Commanders
  • Antonio de la Cruz Estigarribia
Siege of UruguaianaSiege of UruguaianaBattle of YatayBattle of CatalánBattle of San BorjaBattle of YatayBattle of CatalánBattle of San BorjaRiveraMercedesBella UniónArtigas100 km29.755S, 57.088W
The recorded site, with the nearest other engagements in the atlas. Present-day coastlines, rivers and borders; towns from Natural Earth.

Nearest engagements

In the same war

Elsewhere in 1865

Siege of Uruguaiana is one of 3,507 engagements of the 19th century in the atlas and one of 56 in present-day Brazil.

Sources

Identity, coordinates, dates and the war from Wikidata Q6130130, released under CC0. Result, belligerents, commanders, strength and casualties from the infobox of the English Wikipedia article Siege of Uruguaiana, revision 1370746195, read 2026-11-14, licensed CC BY-SA 4.0; the article's text is not reproduced here. Present-day country and state from Natural Earth. Dates before 1582 follow the Julian calendar as recorded.