He served as Chief of Staff of Brazil to President Artur da Costa e Silva, from 1967 to 1969 during the Brazilian military government.

[2] In 1947, Pacheco was elected to the state Legislative Assembly of Minas Gerais as a member of the National Democratic Union (UDN).

[1][2] President Artur da Costa e Silva, the leader of the Brazilian military government, appointed Pacheco as his Chief of Staff from March 1967 until October 1969.

[1][3] In 1973, the state government under Governor Pacheco signed an agreement with Fiat Automobiles to open an automotive plant in the city of Betim, near Belo Horizonte.

[3] Rondon Pacheco's funeral was held at the Palácio dos Leões (Palace of the Lions) in Uberlândia, with burial in the cemitério São Pedro.