The Siege of Montevideo occurred during the Brazilian War of Independence

Brazilian Declaration of Independence

The Brazilian Independence comprised a series of political events occurred in 1821–1823, most of which involved disputes between Brazil and Portugal regarding the call for independence presented by the Brazilian Kingdom...

, during which the Brazilian Army under Carlos Frederico Lecor attempted to capture the city of Montevideo

Montevideo

Montevideo is the largest city, the capital, and the chief port of Uruguay. The settlement was established in 1726 by Bruno Mauricio de Zabala, as a strategic move amidst a Spanish-Portuguese dispute over the platine region, and as a counter to the Portuguese colony at Colonia del Sacramento...

 in Cisplatine

Cisplatina

The Cisplatina Province was a Portuguese and later a Brazilian province in existence from 1815 to 1828...

 (now Uruguay

Uruguay

Uruguay ,officially the Oriental Republic of Uruguay,sometimes the Eastern Republic of Uruguay; ) is a country in the southeastern part of South America. It is home to some 3.5 million people, of whom 1.8 million live in the capital Montevideo and its metropolitan area...

) from the Portuguese Army of Álvaro da Costa de Sousa Macedo. The siege lasted from 20 January 1823 until 8 March 1824 when the Portuguese surrendered to the Brazilian forces. The naval defeat in the Battle of Montevideo (1823) also contributed to hasten the surrender of the Portuguese troops. The event marked the end of the resistance against independence of Brazil in its territory.