From Wikipedia, the free encyclopedia. Idi Amin Dada (c. 1925 – 16 August 2003) was a military leader and President of Uganda from 1971 to 1979. Amin joined the British colonial regiment, the King's African Rifles, in 1946, and eventually held the rank of Major General and Commander of the Ugandan Army before taking power in the military coup of January 1971, deposing Milton Obote. He later promoted himself