[1] Those viewpoints, as well as the positive image of Juan Manuel de Rosas, were shared by all revisionists, but they were divided by the rise of the peronism.

His support increased when the Revolución Libertadora attempted a coup against Perón; he would join the Perónist resistance.

From there, Rosa started working in the history of the Argentine population, which he saw as potentially revolutionary at times, but always oppressed by the higher classes.

He joined the Juan Manuel de Rosas National Institute of Historical Investigations, becoming its president several times.

He was designated ambassador to Paraguay during the third government of Perón; he would resign following his death and moved to Greece.