Why So Many Nazis Fled to South America After World War II, and How They Got Away With It

Fewer than 300 Nazis ever stood trial at Nuremberg. Historians estimate that somewhere between 9,000 and 10,000 escaped Europe entirely, most of them settling into new lives across South America. That gap isn’t an accident of postwar chaos. It’s the result of a real, coordinated system, built and maintained by people who knew exactly who they were helping.

Two Routes, One Destination

Researchers have identified two main paths out of Europe. The first ran from Germany through Spain, across the Atlantic to Argentina. The second went from Germany to Rome, then to the Italian port of Genoa, and from there overseas. The two routes developed somewhat independently at first. Over time, they converged into a single, functioning system, one that came to be known as the ratlines.

Getting from a defeated Germany to a new identity in Buenos Aires wasn’t something any one person could pull off alone. It required forged documents, sympathetic officials willing to sign off on them, and governments willing to look the other way, or actively help, at the other end.

The Vatican’s Complicated, and Sometimes Damning, Role

Some of the earliest help came from within the Catholic Church. Many officials involved were focused on a different, more sympathetic goal: helping ordinary Catholic refugees escape the Communist governments taking hold across postwar Eastern Europe. That effort created infrastructure, false identity papers, sympathetic contacts, safe routes, that war criminals could exploit alongside genuine refugees.

Not everyone involved was simply misled, though. Bishop Alois Hudal, an Austrian-born admirer of Hitler working in Rome, ministered specifically to Axis prisoners of war. He believed the Nazi officials he helped were, in his own words, essentially blameless. He described his own role as rescuing them from their pursuers using false papers. Those documents typically followed a specific path. Vatican-connected officials issued false identity papers first. Those papers were then used to obtain seemingly legitimate passports from the International Committee of the Red Cross. From there, the right visa turned a fugitive into an ordinary immigrant.

A Government That Didn’t Just Look Away

Argentina wasn’t a passive destination. Under President Juan Perón, who took power in 1946, the government actively built these escape channels itself. Diplomats and intelligence officers received orders to establish routes through Spanish and Italian ports, specifically to bring former SS officers and Nazi party members into the country. That same year, the Perón government reportedly reached out through an Argentine cardinal to a French counterpart. The message was clear: Argentina would welcome Nazi collaborators facing potential prosecution in France.

This wasn’t reluctant tolerance. It was deliberate policy, driven by a government that saw value in taking people other nations wanted to prosecute.

The Uncomfortable American Chapter

Western intelligence agencies weren’t innocent bystanders either. As the Cold War took shape, some of the same governments prosecuting Nazi crimes in Europe quietly protected specific war criminals. Their knowledge seemed useful against the Soviet Union, and that outweighed everything else. Klaus Barbie, the Gestapo officer known as the Butcher of Lyon for his role in torture and deportations, fled to Bolivia in 1951 with direct American help. He’d been a paid agent of U.S. Army Counterintelligence since 1947. American intelligence knew exactly who he was, and used him anyway.

Barbie wasn’t an isolated case, either. Around the same time, the United States ran a separate but related program called Operation Paperclip. It deliberately recruited Nazi scientists, rocket engineers especially, and brought them to America to work on postwar weapons and space programs. Some of those men had documented ties to forced labor and war crimes of their own. Wernher von Braun, later celebrated as a key architect of the American space program, had worked with a rocket facility that used concentration camp labor. He faced no consequences for it. The pattern repeats across both programs. When a war criminal’s skills or knowledge outweighed the demand for accountability, accountability tended to lose.

What Happened to the Men Who Got Away

Adolf Eichmann was one of the central architects of the Holocaust’s actual logistics, the man who oversaw the deportation of millions to concentration camps. He escaped to Argentina in 1950 under the false name Ricardo Klement. He used exactly this pipeline: false papers, then a Red Cross passport. Then, he lived freely for a decade before Israeli intelligence agents captured him in 1960. He was tried in Israel and executed in 1962.

Most weren’t so unlucky. Josef Mengele, who performed torturous experiments on concentration camp prisoners, particularly children, was never captured, and died a free man. Alois Brunner fled to Syria in 1954 and is believed to have died there around 2010, having evaded justice his entire life. Herberts Cukurs, a Latvian collaborator who settled in Brazil, met a different kind of ending. Israeli intelligence tracked him down and killed him in Uruguay in 1965, justice delivered outside any courtroom.

Estimates put roughly 5,000 fugitives in Argentina alone, up to 2,000 in Brazil, and between 500 and 1,000 in Chile. Argentina’s clear lead traces directly back to Perón’s active recruitment rather than mere geographic convenience.

A Story Still Being Documented Today

Even the more outlandish rumors around this history had real institutional weight behind them. The CIA investigated claims that Hitler himself had survived and fled to South America under an alias. That investigation stayed open until 1955. Mainstream historians remain unified that he died by suicide in Berlin in 1945. Still, the fact that American intelligence spent a decade chasing the alternative says something.

As recently as 2025, Argentina has continued declassifying documents connected to these escape routes. The full scope of who helped, and exactly how deliberately, is still coming into focus. What’s already clear is damning enough on its own. This wasn’t a handful of criminals slipping through the cracks of a broken postwar world. It was a system, built by willing hands across multiple governments and institutions.