Jacobo Neumann Etienne was a Chilean naval officer who served as Commander-in-chief of the Chilean Navy from 1964 to 1966.
Biography Neumann pursued a career as an officer in the Chilean Navy, eventually attaining flag rank and holding senior positions within the institution. In 1964, he was appointed Commander-in-Chief of the Navy, succeeding Admiral Hernán Cubillos Leiva.
His tenure coincided with the end of the presidency of Jorge Alessandri and the beginning of the administration of Eduardo Frei Montalva. Neumann remained at the head of the Navy until 1966, when he was succeeded by Ramón Barros González.
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