After the return of Juan Perón to Argentina , marked by the 20 June 1973 Ezeiza massacre which led to the split between left and right-wing Peronists , and then his return to the presidency in 1973 , the ERP shifted to a rural strategy designed to secure a large land area as a base for military operations against the Argentine state . The ERP leadership chose to send Compañía de Monte Ramón Rosa Jiménez to the province of Tucumán at the edge of the long-impoverished Andean highlands in the northwest corner of Argentina
Ezeiza massacre
Ezeiza massacre
Operativo Independencia