Question: Operation Gardel was the codename given by the Peronist guerrilla organization Montoneros to the downing of a Lockheed C-130 Hercules, carrying 114 Gendarmerie personnel as part of the Operativo Independencia, was the code-name of the Argentine military operation in the Tucumán Province, started in what year, to crush the ERP —"Ejército Revolucionario del Pueblo" or "People's Revolutionary Army"—, a Guevarist guerrilla group?
Sentence (from "Operation Gardel"): Operation Gardel was the codename given by the Peronist guerrilla organization Montoneros to the downing of a Lockheed C-130 Hercules, belonging to the 1st Transport Group of the 1st Air Brigade, as it took off the old "Teniente General Benjamín Matienzo" International Airport, carrying 114 Gendarmerie personnel as part of the Operativo Independencia.
Relevant evidence: Yes