Approximately 30,000 people were 'disappeared' during the Dirty War.
The military dictatorship ruled Argentina from 1976 to 1983.
Ongoing trials reflect the enduring quest for justice by victims' families.
Briefing: Argentina's 'Dirty War' still on trial 50 years later
Strategic angle: Victims are still fighting for justice as the legacy of the brutal military dictatorship continues to unfold.