He was one of the first graduates, in 1914, of the military school established by Gómez, and his rise in the military ranks was steady if unspectacular.
In 1935 he was chief of staff of the army; between 1936 and 1941 minister of war and navy under Gómez successor. President Eleazar López Contreras; and in 1940 a brigadier general.
On October 18, 1945, Medina’s government fell.
Ex-President Medina went into exile in the United States, returning home in 1948 only after the Acción Democrática government had been overthrown. He played no further role in politics.