Military Coups in Argentina (1930–1976)

Between 1930 and 1976, six military coups in Argentina marked a period in which the country’s democratization process was repeatedly interrupted, accompanied by economic crises and political instability. The transition to democracy was not merely a matter of holding elections but became a complex struggle involving the institutionalization of democratic norms and structures. Although the return to democracy in 1983 was seen as a new beginning for Argentina, the consolidation of the democratic order proved a painful process. The six military coups of the 20th century (1930, 1943, 1955, 1962, 1966, and 1976) consistently disrupted democratic stability. Among these, the 1976 military intervention, characterized by systematic human rights violations and the disappearance of approximately 30,000 people, is etched into national memory as one of the darkest periods in the country’s history. The presidency of Carlos Menem from 1989 to 1999 represented a pivotal turning point in Argentina’s political transformation, marking a phase in which efforts to strengthen the democratic regime gained momentum.

^{View of the 1943 Coup in Buenos Aires, Argentina}(Picryl)

On 6 September 1930, General José Félix Uriburu launched the first coup against democracy. The target was Hipólito Yrigoyen, leader of the Radical Civic Union (UCR), who had been democratically elected in 1928 as the country’s first popularly chosen president. The coup was justified by economic crisis (the 1929 Depression) and political elites’ opposition to populist governance. This coup is recorded as the first modern military intervention in Latin America.

On 4 June 1943, the GOU (United Officers’ Group) carried out a coup that replaced the authoritarian government of Ramón Castillo with a new military regime. The military’s motivation included opposition to Argentina’s neutrality policy during World War II, driven by nationalist-conservative factions within the armed forces. During this period, Juan Domingo Perón rose to prominence as Minister of Labor, expanding workers’ rights. The foundations of Peronism were laid during this time.

On 16 September 1955, General Eduardo Lonardi led a coup against Juan Perón, who had been in power since 1946. Lonardi, who became interim president after the coup, was overthrown two months later and replaced by General Pedro Eugenio Aramburu. This event is known as the “Libertadora Revolution.” The causes leading to the coup included:

1) Break with the Church: Perón’s attempt to legalize divorce provoked conflict with the Catholic Church. After the death of Eva Perón in 1952, Perón’s self-portrayal as a messianic figure alarmed the Vatican. In May 1955, he exiled two bishops, prompting the Church to give its tacit support to the coup.

2) U.S. Reaction: Perón pursued a “Third Position” policy, refusing to align with either the U.S. or Soviet blocs, charting an independent course. To achieve economic autonomy, he nationalized British-owned railways and other foreign enterprises. He also refused to join UN forces in the Korean War, maintaining a neutral foreign policy. With the slogan “Neither Washington nor Moscow,” he cultivated an image as an anti-imperialist leader in Latin America. The Perón regime deliberately provided refuge to Nazi war criminals. Adolf Eichmann (architect of the Holocaust) fled to Argentina in 1950 under a false identity. Josef Mengele (the Angel of Death) arrived in 1949. Figures such as Klaus Barbie (the Butcher of Lyon) were also protected during Perón’s rule. The Nazi connection scandal gave the U.S. an opportunity to portray Perón as a “moral enemy.” The New York Times published articles in 1955 titled “Argentina: Nazi Paradise.” The U.S. became the first country to officially recognize the junta after the coup. Three days before the coup, the U.S. Navy deployed a fleet off the coast of Uruguay as a psychological pressure tactic. The plotters received funding from Wall Street banks, including Chase Manhattan Bank.

When Perón went into exile in 1955, he said, “The U.S. wants to steal Argentina’s oil.”

Indeed, in 1958, U.S. companies signed oil agreements with the Aramburu government. During the Cold War, leaders who pursued independent policies posed a significant risk to U.S. interests.

Perón tried to write his own rules in America’s backyard. He paid the price in exile.” – Uki Goñi, author of The Real Odessa

3) Economic Collapse: Inflation exceeded 30 percent from 1952 onward, and worker strikes increased. Perón’s state-led policies (import-substituting industrialization) alienated agricultural exporters (oligarchs). Perón’s declaration, “I am the one who created you!” led to conflict even with unions he had established. The Sociedad Rural Argentina (representing large landowners) openly called for a coup. Military salaries eroded under inflation. Military-industrial projects, such as aircraft factories, were halted due to lack of funding. The economic collapse of 1955 foreshadowed the famous Cordobazo uprising of 1969. The same errors—inflation and industrial failure—were repeated under Aramburu and subsequent governments. When Perón returned in 1973, he declared, “We have been struggling with the same economic crisis for 25 years.”

Perón filled the stomachs of the working class but emptied the state treasury.” – Carlos Escudé, Argentine economist

On 29 March 1962, anti-Peronist factions within the military overthrew President Arturo Frondizi, who had allowed Peronists to participate in elections. The indirect electoral victories of Peronists were annulled, and Frondizi was forced to resign. Seven months later, civilian rule was restored under interim president José María Guido. The military intervened to prevent the resurgence of Peronism.

On 28 June 1966, General Juan Carlos Onganía led a coup against President Arturo Illia, justifying the takeover by claiming the civilian political system had failed. Under Onganía, the military implemented a technocratic authoritarian model. Universities and student movements were suppressed (culminating in the 1969 Cordobazo uprising), and labor movements were systematically dismantled. A bureaucratic-authoritarian regime was established (as theorized by Guillermo O’Donnell). Onganía was overthrown in 1970. Perón returned in 1973.

On 24 March 1976, Jorge Videla, Emilio Massera, and Orlando Agosti overthrew the government of Isabel Perón. During the military junta’s rule in Argentina from 1976 to 1983, thousands of people suspected of opposing the regime were secretly abducted, detained, tortured, and many never seen again. No official records were kept of these individuals, and their families were not informed. Hence, they are referred to as “the disappeared.” Democracy was restored in 1983 with the election of Raúl Alfonsín. During this transition, the National Commission on the Disappearance of Persons (CONADEP) was established to document human rights abuses.

In 1983, Argentina established CONADEP (National Commission on the Disappearance of Persons), an independent body tasked with investigating those forcibly disappeared during the dictatorship. The 1984 report published by CONADEP was titled “Nunca Más” (Never Again). This document stands as one of the most important records formally proving state terrorism in Latin America. Brutal methods such as throwing detainees alive from airplanes were documented. The term “systematic state terrorism” was used officially for the first time in a government report. It also served as an inspiration for similar human rights commissions in other countries: Chile’s Rettig Commission and South Africa’s Truth and Reconciliation Commission. However, it has been argued that official figures understate the true number of victims and that many lower-ranking military personnel were never prosecuted. In the 2000s, during the Kirchner era, human rights groups reignited efforts to hold unprosecuted perpetrators accountable. Even today, groups such as the Grandmothers of the Plaza de Mayo use CONADEP’s data to search for their lost grandchildren. The fundamental causes of the 24 March 1976 coup were hyperinflation and stagnation, the failure of populist policies, and international pressure. The coup was led by General Jorge Videla and justified under the banner of “National Salvation,” claiming to combat communism and restore economic stability.