 Repatriated in August 1946, he entered the Italian Diplomatic Service in 1948, serving in Paris, Brisbane, Karachi, Canberra, West Berlin, and (as Head of Delegation) at the United Nations, before his appointment in 1973 as ambassador in Montevideo.Benuzzi retired to Rome (Via Nepi, 13), serving in retirement as Head of the Italian Delegation for the Antarctic.He died in Rome in July 1988.