Rio Grande do Sul Revolt of 1925

Rio Grande do Sul Revolt of 1925
Part of Tenentism
Oswaldo Aranha's irregular troops passing through Alegrete after victory
Date 29 September – 8 October 1925 (in Brazil) 21–24 September 1925 (in Uruguay) Location Rio Grande do Sul, Brazil and Uruguay Result Loyalist victory
Belligerents
Rebels Liberating Alliance Tenentist rebels	Brazil Brazilian Army Military Brigade  Uruguay
Commanders and leaders
Isidoro Dias Lopes Honório Lemes Adalberto Corrêa	Borges de Medeiros Flores da Cunha

The Rio Grande do Sul Revolt of 1925, also called Revolution of 1925, was triggered by opposition civilians, supported by tenentists, aiming to overthrow the state government of the Brazilian state of Rio Grande do Sul and support the Prestes Column. The revolt was planned by exiles, defeated in the previous 1924 revolt, who still recognized the leadership of general Isidoro Dias Lopes. The plan envisaged uprisings in the army and invasions across the border by groups of exiles.

However, the expected uprisings did not occur and only one of the leaders of the incursions, Honório Lemes, crossed the border at the end of September. Several groups operated in the municipalities of Santana do Livramento and Dom Pedrito until their surrender or exile in early October. Another leader, Adalberto Corrêa, also tried to cross the border, but was intercepted, injured and arrested by the Uruguayan Army and police before even entering Brazil.