Idi Amin Dada was the third President of Uganda, ruling from 1971 to 1979. Amin joined the British colonial regiment the King's African Rifles in 1946, serving in Kenya and Uganda. Eventually, Amin held the rank of major general in the post-colonial Ugandan Army, and became its commander before seizing power in the military coup of January 1971, deposing Milton Obote. He later promoted himself to field marshal while he was the head of state. Amin's rule was characterized by human rights abuses, political repression, ethnic persecution, extrajudicial killings, nepotism, corruption, and gross economic mismanagement. The number of people killed as a result of his regime is estimated by international observers and human rights groups to range from 100,000 to 500,000. During his years in power, Amin shifted in allegiance from being a pro-Western ruler enjoying considerable Israeli support to being backed by Libya's Muammar Gaddafi, Zaire's Mobutu Sese Seko, the Soviet Union, and East Germany. In 1975, Amin became the chairman of the Organisation of African Unity, a Pan-Africanist group designed to promote solidarity of the African states. During the 1977–1979 period, Uganda was a member of the United Nations Commission on Human Rights. Amin did however enjoy the support of the American CIA, which helped deliver bombs and other military equipment to Amin's Army and helped take part in military operations with Amin's forces in Uganda. In 1977, when Britain broke diplomatic relations with Uganda, Amin declared he had defeated the British and added "CBE", for "Conqueror of the British Empire", to his title. Radio Uganda then announced his entire title: "His Excellency President for Life, Field Marshal Alhaji Dr. Idi Amin Dada, VC, DSO, MC, CBE". Dissent within Uganda and Amin's attempt to annex the Kagera province of Tanzania in 1978, led to the Uganda–Tanzania War and the demise of his eight-year regime, leading Amin to flee into exile to Libya and then Saudi Arabia, where he lived until his death on 16 August 2003.

https://en.wikipedia.org/wiki/Idi_Amin