 Aung Gyi was number two in the Union Revolutionary Council set up after the 1962 coup, serving as vice-chief of staff and Minister of Trade and Industry until he was forced to resign on 8 February 1963 because of disagreements over economic policy with Ba Nyein and Tin Pe.He was once known as Ne Win's heir apparent.In his memoirs, "Saturday's Son", published in 1974, U Nu, then Prime Minister of Myanmar, claimed that his handover of power to the caretaker government was not voluntary but that a group of Army Officers led by Brigadier Aung Gyi and Brigadier Maung Maung threatened him with a "straight military coup" should he refuse to handover power to Ne Win.