After the return of Juan Perón to the presidency in 1973, the ERP shifted to a rural strategy designed to secure a large land area as a base of military operations against the Argentine state. The ERP leadership chose to send the "Compania del Monte Ramón Rosa Jimenez" (Ramón Rosa Jimenez Mountain Company) to the province of Tucumán at the edge of the long-impoverished Andean highlands in the northwest corner of Argentina. Many of the officers in the rural "guerrilleros" company were trained in Cuba.