With many disqualified ex-soldiers in its ranks, and some of its members having undergone military training in Cuba, the MNR would be inspired by Che Guevara's Foquism to establish a rural guerrilla focus in Brazil in 1966, first near Criciúma and later in the limits of the Caparaó National Park.

He obtained financial support from Cuba through his envoy, the former deputy Neiva Moreira and the help of AP (Popular Action) by Herbert de Souza, known as Betinho; thus becoming the main Brazilian political opposition figure in exile, outside the Communist Party.

[3] In Uruguay, Brizola was sought out by the group of ex-sergeants commanded by Amadeu Felipe da Luz Ferreira, a former army sergeant, born in Santa Catarina, member of the PC and political activist since the Legality Campaign in 1961 for Jango's inauguration.

Brizola joined his closest collaborators such as Paulo Schiling, Flavio Tavares and Neiva Moreira with a group of purged sailors, and created the MNR (Revolutionary Nationalist Movement), with a support base in Rio de Janeiro, commanded by professor Bayard De Marie Boiteaux, former leader of the Brazilian Socialist Party.

In addition to housing the men, weapons (many from the mobilization of sergeants from Rio Grande do Sul, during the Legality Campaign) and uniforms were also divided among the devices.

[1] After the two uprising attempts to take Porto Alegre were frustrated, and with no other apparent alternative, the Gaucho leader decided to support the theory of guerrilla outbreaks.