Colonel Mengistu Hailemariam (born 1937) was the most famous officer of the Derg, the military junta that governed Ethiopia from 1974 to 1987, and the president of the People’s Democratic Republic of Ethiopia.
He oversaw the Ethiopian Red Terror of 1977-1978, a repression campaign against the Ethiopian People’s Revolutionary Party and other anti-Derg factions.
After the downfall of Haile Selassie, Ethiopia was controlled by Communist regimes which shifted the equipment, organization and doctrines away from Western European and American influences towards those of the Soviet Union and other Communist countries, especially Cuba.