The Rio Grande do Sul Revolt of 1924 was triggered by tenentist rebels from the Brazilian Army and civilian leaders from the Liberating Alliance on 28–29 October of that year. The civilians, continuing the 1923 Revolution, wanted to remove the governor of Rio Grande do Sul, Borges de Medeiros, while the military were against the president of Brazil, Artur Bernardes. After a series of defeats, in mid-November the last organized stronghold was in São Luiz Gonzaga. In the south, guerrilla warfare continued until the end of the year. From São Luiz Gonzaga, the remnants of the revolt headed out of the state, joining other rebels in the Paraná Campaign and forming the Miguel Costa-Prestes Column.

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.