The origins of the transitional justice field can be traced back to the post-World War II period in Europe with the establishment of the International Military Tribunal at Nuremberg and the various de-Nazification programs in Germany and the trials of Japanese soldiers at the Tokyo Tribunal. What became known as the "Nuremberg Trials", when the victorious allied forces extended criminal justice to Japanese and German soldiers and their leaders for war crimes committed during the war, marked the genesis of transitional justice. The field gained momentum and coherence during the 1980s and onwards, beginning with the trials of former members of the military juntas in Greece (1975), and Argentina (Trial of the Juntas, 1983). The focus of transitional justice in the 1970s and 1980s was on criminal justice with a focus on human rights promotion. This led to a worldwide focus and progressive rise of human rights regime culminating in the establishments of international human rights laws and conventions.