[1] A veteran of the Brazilian Expeditionary Force during World War II, he served as the Army Chief of Staff during Costa e Silva's Presidency and then headed the Highest Military Tribunal.

His father emigrated from Ponte de Lima in Northern Portugal in 1898 and owned a cattle ranch.

Dos Santos served as the 18th vice president of Brazil under General Ernesto Geisel from 1974 to 1979.

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