Question: Andrés J. d'Alessio was involved in this judicial trial of the "de facto" military government that ruled Argentina during the dictatorship of the Proceso de Reorganizacion Nacional?

Context paragraphs:
National Reorganization Process: The National Reorganization Process (Spanish: "Proceso de Reorganización Nacional" , often simply "el Proceso", "the Process") was the name used by its leaders for the military dictatorship that ruled Argentina from 1976 to 1983.  In Argentina it is often known simply as "la última junta militar" (the last military junta) or "la última dictadura" (the last dictatorship), because there have been several.

Military dictatorship of Chile (1973–90): The military dictatorship of Chile (Spanish: "dictadura militar de Chile" ) was an authoritarian military government that ruled Chile between 1973 and 1990.  The dictatorship was established after the democratically-elected socialist government of Salvador Allende was overthrown by a CIA-backed coup d'état on 11 September 1973.  During this time, the country was ruled by a military junta headed by General Augusto Pinochet.  The military used the perceived breakdown of democracy and the economic crisis that took place during Allende's presidency to justify its seizure of power.  The dictatorship presented its mission as a "national reconstruction."

Dirty War: The "Dirty War" (Spanish: "Guerra Sucia" ), was the name used by the Argentine Military Government for a period of state terrorism in Argentina from roughly 1974 to 1983 (some sources date the beginning to 1969), during which military and security forces and right-wing death squads in the form of the Argentine Anticommunist Alliance (Triple A) hunted down and killed left-wing guerrillas, political dissidents, and anyone believed to be associated with socialism.  About 30,000 people disappeared, many of which were impossible to be formally reported due to the nature of the issue: state terrorism.  The targets were left-wing activists, guerrillas and militants, trade unionists, students, journalists and Marxists and Peronist guerrillas and their support network in the Montoneros believed to be 150,000-250,000-strong and 60,000-strong in the ERP, as well as alleged sympathizers.  Some 10,000 of the "disappeared" were guerrillas of the Montoneros (MPM) and the Marxist People's Revolutionary Army (ERP) although the lowest estimate is that the Montoneros and ERP had a combined strength of 5,000.  The "disappeared" included those thought to be a political or ideological threat to the military junta, even vaguely, and they were killed in an attempt by the junta to silence the opposition and break the determination of the guerrillas.  The worst repression reportedly occurred after the guerillas were largely defeated in 1977, when the church, labor unions, artists, intellectuals and university students and professors were targeted.  Although the Montoneros reported having carried out some 600 armed attacks in 1977, the guerrilla threat had greatly declined.  The junta justified this mass terror by exaggerating the guerrilla threat, and even staged attacks to be blamed on guerillas and used frozen dead bodies of guerilla fighters that had been kept in storage for this purpose.  In late 1979, Amnesty International accused the Videla military government of being responsible for the disappearance of 15,000 to 20,000 Argentine citizens since the 1976 coup.  That year, a special study by the New York City Bar concluded that around 10,000 Argentines had disappeared since the coup.  According to "Registro Unificado de Víctimas del Terrorismo de Estado" (Ruvte), 662 were disappeared under the presidency of Isabel Perón and 6,348 were disappeared during the military dictatorship.

Haroldo Conti: Haroldo Conti (May 25, 1925 – 1976?)  was an Argentine writer, screenwriter, teacher and Latin professor.  On May 5, 1976 he disappeared during the Proceso de Reorganización Nacional military dictatorship, on this day the "Día del Escritor Bonaerense" (Day of the Buenos Aires Province writer) is held to commemorate this date of his kidnap.

Alfredo Astiz: Alfredo Ignacio Astiz (born 8 November 1951) is a former commander, intelligence officer, marine and naval commando who served in the Argentine Navy during the military dictatorship of Jorge Rafael Videla during the Proceso de Reorganización Nacional (1976–1983).  He was known as "El Ángel Rubio de la Muerte" (the "Blond Angel of Death"), and had a reputation as a notorious torturer.  He was discharged from the military in 1998 after defending his actions in a press interview.

Law of Due Obedience: The Law of Due Obedience (Spanish: "Ley de obediencia debida" ) was a law passed by the National Congress of Argentina after the end of the military dictatorship of the Proceso de Reorganización Nacional (which started with a coup d'état in 1976 and ended in 1983).  Formally, this law is referred to by number (Law No. 23521), like all others in Argentine legislation, but "Ley de Obediencia Debida" is the only designation in common use, even in official speeches.

Full stop law: The Full stop law, Ley de Punto Final, was passed by the National Congress of Argentina in 1986, three years after the end of the military dictatorship of the Proceso de Reorganización Nacional (1976 to 1983) and restoration of democracy.  Formally, this law is referred to by number (Law No. 23492), like all others in Argentine legislation, but "Ley de Punto Final" is the designation in common use, even in official speeches.

Trial of the Juntas: The Trial of the Juntas (Spanish, Juicio a las Juntas) was the judicial trial of the members of the "de facto" military government that ruled Argentina during the dictatorship of the Proceso de Reorganización Nacional ("el proceso"), which lasted from 1976 to 1983.

Andrés J. d'Alessio: Andrés J. d'Alessio (1940–2009) was an academic, lawyer, and an Argentine judge.  He was personally involved in the Trial of the Juntas.

Mike Akhigbe: Mike Okhai Akhigbe (September 29, 1946 - October 13, 2013) was a vice admiral in the Nigerian Navy who served as "de facto" Vice President of Nigeria (as Chief of General Staff) during the General Abdusalami Abubakar led military government from 1998 till the termination of military government in Nigeria, in 1999.  He served as Military Governor of Nigeria's Ondo State from 1985 to 1986, and Military Governor of Lagos State from 1986 to 1988, after which he was appointed Chief of Naval Staff, the highest-ranking officer of the Nigerian Navy, and subsequently the Chief of General Staff, the highest-ranking military officer of the Federal Republic of Nigeria Armed forces.  He died in the US on 28 October 2013 after suffering from cancer for a few years.

Supporting paragraphs: Andrés J. d'Alessio Trial of the Juntas
Answer: Trial of the Juntas