| Date | 24 March 1976 – 10 December 1983 |
| Location | Republic of Argentina |
| Caused by | Military coup against President Isabel Perón amid political instability, economic crisis, and left-wing insurgency |
| Resulted in | Systematic forced disappearance of 10,000–30,000 persons; defeat in the 1982 Falklands War; restoration of civilian democracy under Raúl Alfonsín; Trial of the Juntas (1985); Nunca Más report (1984) |
| Parties | Argentine Army · Argentine Navy · Argentine Air Force · Escuela de Mecánica de la Armada (ESMA) · Abuelas de Plaza de Mayo · Madres de Plaza de Mayo · CONADEP |
| Lead figures | Jorge Rafael Videla, Emilio Eduardo Massera, Orlando Ramón Agosti, Roberto Eduardo Viola, Leopoldo Fortunato Galtieri, Reynaldo Bignone, Raúl Alfonsín, Ernesto Sabato |
The Argentine Military Junta of 1976–1983 was a right-wing authoritarian regime that governed the Republic of Argentina from 24 March 1976 to 10 December 1983, following the coup d'état that deposed the constitutionally elected President María Estela Martínez de Perón. The junta, which designated itself the *Proceso de Reorganización Nacional* (National Reorganization Process), was responsible for the systematic abduction, torture, and disappearance of an estimated 10,000 to 30,000 citizens during a period known as the Dirty War (*Guerra Sucia*), and remains one of the most extensively documented cases of state-sponsored terror in Latin American history.
Argentina in the early 1970s was marked by severe political instability, persistent economic deterioration, and escalating violence between left-wing guerrilla organisations — principally the Ejército Revolucionario del Pueblo (ERP) and the Montoneros — and right-wing paramilitary groups, most notoriously the Alianza Anticomunista Argentina (Triple A). The presidency of Isabel Perón, who had assumed office following the death of Juan Domingo Perón in July 1974, was characterised by cabinet instability, hyperinflation exceeding 400 percent annually by 1976, and an effective collapse of executive authority.
By early 1976, senior commanders of the Argentine Army, Navy, and Air Force had reached a consensus that a military intervention was both necessary and imminent. Planning for the coup was conducted under conditions of considerable operational secrecy; the first formal inter-service coordination meeting was recorded in the minutes of a joint general staff session dated 18 February 1976, a document later recovered and entered into evidence during the 1985 Trial of the Juntas. The United States Department of State, through its Buenos Aires embassy, was made aware of coup preparations no later than February 1976, as subsequently confirmed by declassified State Department cables released between 2002 and 2017.
### 24 March 1976
At approximately 03:00 on 24 March 1976, military units seized control of the Casa Rosada, the presidential residence, and principal telecommunications infrastructure across Buenos Aires. Isabel Perón was detained at the presidential residence of Olivos and subsequently transferred to house arrest in the Andean province of Neuquén. A three-member junta was formally constituted at 07:00, comprising General Jorge Rafael Videla (Army), Admiral Emilio Eduardo Massera (Navy), and Brigadier General Orlando Ramón Agosti (Air Force). Videla assumed the additional role of de facto President. The constitutional government was suspended, Congress dissolved, and the Supreme Court replaced in its entirety by military appointees within 48 hours of the coup.
### 1976–1979: The First Junta and the Dirty War
The junta's internal security apparatus operated principally through a network of approximately 340 clandestine detention centres (*centros clandestinos de detención*), the largest and most notorious of which was the Escuela de Mecánica de la Armada (ESMA) in Buenos Aires, which processed an estimated 5,000 detainees. Detainees, referred to internally as *desaparecidos* (the disappeared), were held outside any legal framework and subjected to systematic torture. An estimated 1,500 children were born to detained mothers or were themselves detained; the fate of many of these children — frequently given to families connected to the military or security services — became the founding concern of the Abuelas de Plaza de Mayo, established in 1977.
The junta formally authorised the use of what it termed "intensive interrogation techniques" through a secret directive, Orden Reservada No. 504/77, signed in April 1977 and recovered from the Second Army Corps archive in Rosario in 1984. Operational command of detention and interrogation was delegated to regional corps commanders, creating a decentralised structure that both maximised territorial reach and complicated subsequent attribution of responsibility.
### 1979–1981: Second and Third Juntas
General Videla was succeeded as junta president by General Roberto Eduardo Viola in March 1981, marking the transition to the second junta. Viola's tenure was brief; deteriorating economic conditions — including a balance-of-payments crisis, a banking sector collapse, and inflation approaching 100 percent — led to his removal by General Leopoldo Fortunato Galtieri in December 1981, who constituted the third junta together with Admiral Jorge Isaac Anaya and Brigadier General Basilio Lami Dozo.
### 1982: The Falklands War
Facing severe domestic unpopularity and a deepening economic crisis, Galtieri authorised the invasion of the Falkland Islands (Islas Malvinas) on 2 April 1982, a decision attributed in subsequent testimony to Admiral Anaya, who had made Argentine recovery of the islands a personal and institutional priority. The Argentine military occupation of the islands was reversed by a British naval and ground task force over 74 days; Argentina's formal surrender was signed on 14 June 1982. The military defeat precipitated the immediate political collapse of the Galtieri junta. Galtieri resigned on 17 June 1982 and was replaced by retired General Reynaldo Bignone, who was tasked with managing the transition to civilian rule.
The restoration of civilian government was received with widespread public celebration in Buenos Aires and across the country. Alfonsín moved quickly to establish the Comisión Nacional sobre la Desaparición de Personas (CONADEP), by executive decree on 15 December 1983. Chaired by the novelist Ernesto Sabato, CONADEP conducted interviews with over 1,400 survivors and witnesses over nine months and produced the report *Nunca Más* (Never Again), submitted to the president on 20 September 1984 and published for general circulation the same day. The report documented 8,961 confirmed cases of forced disappearance, a figure widely regarded by human rights organisations as a significant undercount.
The Trial of the Juntas (*Juicio a las Juntas*) opened before the Federal Court of Appeals in Buenos Aires on 22 April 1985. Videla and Massera received life sentences; Agosti, Viola, and three subsequent junta members received sentences ranging from four and a half years to seventeen years. The proceedings, the first of their kind in Latin American history to be conducted through civilian courts rather than military tribunals, were televised in part and drew international legal observers from 21 countries.
The junta period and the Dirty War have been the subject of sustained legal, academic, and cultural reckoning within Argentina for four decades. The *Nunca Más* report remains in continuous print and has been cited in human rights proceedings in eleven countries. Amnesty laws passed in 1986 and 1987 — the Punto Final and Obediencia Debida laws — significantly curtailed subsequent prosecutions, but were declared unconstitutional by the Argentine Supreme Court in 2003, reopening the legal framework for additional trials. By 2023, Argentine federal courts had issued convictions in more than 1,100 cases related to crimes committed during the junta period.
The Mothers and Grandmothers of the Plaza de Mayo continued their weekly Thursday marches around the Plaza de Mayo in Buenos Aires — a practice begun in April 1977 — into the 2020s. The Abuelas de Plaza de Mayo, through the use of genetic identification techniques developed in cooperation with the Argentine National Genetic Data Bank (*Banco Nacional de Datos Genéticos*), established by law in 1987, had by 2024 identified 133 grandchildren who had been taken from their families during the junta period.
The junta period has been the subject of significant artistic and documentary attention in Argentina and internationally. The 1985 film *La Historia Oficial* (*The Official Story*), directed by Luis Puenzo, won the Academy Award for Best Foreign Language Film and brought the issue of stolen children to wide international audiences. The 2023 Netflix series *Argentina, 1985*, dramatising the Trial of the Juntas, was nominated for a Golden Globe and prompted renewed public discussion of the proceedings within Argentina. The ESMA detention centre, converted into a *Espacio Memoria y Derechos Humanos* (Space for Memory and Human Rights) in 2004 by decree of President Néstor Kirchner, was declared a UNESCO World Heritage Site in 2023.
### 1983: Transition
General elections were held on 30 October 1983. Raúl Alfonsín of the Unión Cívica Radical defeated the Peronist candidate Ítalo Lúder with 51.7 percent of the popular vote — the first time since 1916 that a non-Peronist candidate had won a presidential election outright. Alfonsín assumed office on 10 December 1983, constitutionally ending the junta period.