Third siege of Porto Alegre

Third siege of Porto Alegre
Part of the Ragamuffin War

A map of Porto Alegre in 1840, showing the defensive line around the city
Date15 June 1838 – 8 December 1840
Location
Result Imperial victory
Belligerents
Riograndense Republic Empire of Brazil
Commanders and leaders
Bento Manuel Ribeiro
David Canabarro
Bento Gonçalves
Elzeário de Miranda e Brito
Pierre Labatut
Strength
Unknown 1,000 men
Casualties and losses
Unknown Unknown

The third siege of Porto Alegre was a siege carried out by rebel forces during the Ragamuffin War in southern Brazil between June 1838 and December 1840. It was the last siege made to Porto Alegre, the capital of Rio Grande do Sul, during the conflict. Porto Alegre had been in Imperial hands ever since June 1836 (when it was recaptured from the rebels).

After the crucial rebel victory at the Battle of Barro Vermelho, Republican leaders Bento Manuel Ribeiro and David Canabarro marched towards the city with their men; this time, they did not attempt to assault it. Over the course of two and a half years, they kept an important part of the Imperial troops in the province pinned to the city in its defense, before being forced to lift the siege.