The Liberating Revolution was the military overthrow of Juan Perón in September 1955 and the campaign to eradicate Peronism that followed. It transformed Argentina from a refuge whose political order had offered Nazi fugitives room to maneuver into a more uncertain environment, prompting Josef Mengele to reconsider his safety while leaving the country’s capacity to pursue him far from assured. The revolution’s significance lies both in the force of its domestic purge and in the gap between political rupture and effective cross-border justice.

Crisis and overthrow

The confrontation developed amid mounting violence. On 16 June 1955, anti-Peronist military leaders known as the Gorillas bombed the presidential palace and May Square. Juan Perón survived, but the attack marked a deepening crisis. By September, mutinies had broken out in Córdoba and Bahía Blanca; on 16 September, the navy blockaded Buenos Aires and threatened the refineries. With civil war looming, Perón resigned and escaped aboard a Paraguayan gunboat bound for Asunción. A military junta took power, but its first leader was soon displaced by Pedro Eugenio Aramburu, who pledged to purge the country of Peronism.

The change of government did not immediately produce a settled political order. The first general was deposed within weeks, and Aramburu’s administration made the overthrow a campaign against the defeated movement’s public presence. The military victory therefore reached beyond the removal of Perón: it sought to make Peronism difficult to name, display, or preserve in everyday life.

The purge of Peronist symbols

Aramburu’s government prohibited public displays of images and sculptures of Juan Perón and his deceased wife, as well as the use of Peronist names and expressions. Violations could bring prison sentences. Union leaders were arrested, thousands of officials dismissed, and places bearing Perón’s name—from cities and streets to stations, squares, and stadiums—were renamed. The campaign also entered private and personal life: girls named Evita were made to change their first names.

The material remains of the former government were treated as targets of public erasure. Eva Perón’s foundation was closed; its sheets were burned and its cutlery melted down. Statues were toppled, while possessions of the couple, including mopeds and ornaments, were put on display to represent their alleged vice and greed. Eva Perón’s embalmed corpse disappeared. These acts made the revolution’s political purpose visible in renamed places, destroyed objects, and the removal of a body whose continued presence might have sustained the defeated movement’s symbols.

Nazi fugitives in a changed Argentina

The fall of Juan Perón unsettled Nazis who had regarded Argentina as a place of protection. Aramburu threatened to break the power of those who had profited under the previous regime; companies backed by German capital closed, police searched Uli Rudel’s home in Córdoba and placed him under house arrest, and war criminals, including Bohne, left the country. Mengele considered escaping to Paraguay but initially stayed. He reasoned that he had avoided politics and was an entrepreneur rather than part of Perón’s inner circle. He stopped performing illegal abortions and waited for the political storm to pass, hoping that Aramburu’s admiration for Prussian military traditions might work in the Nazis’ favor.

That calculation did not make Argentina a dependable refuge. In 1959, after an arrest warrant was issued in Freiburg im Breisgau for multiple murders and attempted murders, German authorities sought Mengele’s extradition. The request encountered delay and bureaucratic obstruction in Argentina, while word of the warrant reached him through Hans Sedlmeier. The prospect that a new, democratically elected Argentine government might be less lenient toward Nazis helped drive his decision to sell property and move to Paraguay. There, Uli Rudel helped him obtain citizenship, a safeguard against extradition that depended on Paraguayan sovereignty rather than on any settled protection in Argentina.

From political rupture to an international pursuit

The revolution did not by itself bring Mengele to trial. His case instead exposed how slowly political change translated into legal action across borders. In Paraguay, the extradition process became entangled in official procedures, while Uli Rudel intervened with the interior minister on Mengele’s behalf. In November 1959, Paraguay granted him citizenship and official documents. That outcome turned a change in his refuge into a new legal obstacle for those seeking his return.

The later pursuit unfolded amid further changes in international attention and cooperation. In 1960, as Isser Harel planned a second operation following the capture of Adolf Eichmann, Mengele was among the targets Mossad hoped to seize. The effort relied on sparse information and a narrow window after Eichmann’s arrest. The arrest intensified fear among Nazi fugitives and made Argentina’s reputation as a haven an international concern, but it did not resolve the difficulties of locating Mengele or securing his extradition. By 1964, West German officials publicly pressed Paraguay over his citizenship and whereabouts; Paraguayan leaders rejected the pressure in the name of national sovereignty. The revolution had ended one political order, but the subsequent pursuit showed that removing a regime’s protection did not automatically dismantle the networks, legal delays, and state interests that could shelter a fugitive.