AmericasEvent

Battle of Curupayty, 22 September 1866

When
1866–1867
Where
Curupayty
Episodes
2

On 22 September 1866, Brazilian, Argentine, and Uruguayan forces attacked Paraguayan fortified trenches at Curupayty. The Allied offensive suffered an almost catastrophic defeat, halting their advance for ten months until July 1867. This engagement occurred during the broader War of the Triple Alliance, following earlier clashes at Estero Bellaco and Tuyutí.

Episodes

  1. 22 September 1866 · CurupaytyAttack on Curupayty

    Joint Allied forces attacked Paraguayan fortified trenches on Curupayty on 22 September 1866.

  2. September 1866 to July 1867 · CurupaytyHalted Offensive

    The Allied offensive was halted for ten months following the defeat at Curupayty.

Background and detail

The Engagement. On the morning of 22 September 1866, a joint force of Brazilian, Argentine, and Uruguayan armies attacked Paraguayan fortified trenches on Curupayty. The result was an almost catastrophic defeat for the Allied forces. This failure halted the Allied offensive for ten months, lasting until July 1867. The battle marked a significant defensive success for Paraguay in the early phase of the war.

Aftermath. General Flores left for Uruguay in September 1866, shortly after the battle. The Brazilian government subsequently decided to create a unified command over its forces in Paraguay, appointing the Marquess of Caxias as the new leader on 10 October 1866. Caxias assumed overall command of the Allied forces in February 1867, following the departure of President Mitre.

People involved

Sources

  1. Battle of Curupayty Wikipedia, revision of 2026-09-23
  2. Paraguayan War Wikipedia, revision of 2026-10-05

Machine-drafted from the cited Wikipedia passages and checked by a reviewing model, not by a human editor. Every passage cites the revision it was written from; dates and places follow those passages.