Parona was born in
Novara,
Piedmont, on 23 April 1889, son of Emilio Parona and Elena Tarella. He entered the
Naval Academy in
Livorno in 1906 and graduated in 1910 with the rank of
ensign. He participated in the
Italo-Turkish War on board the
armored cruiser Varese; when Italy entered
World War I, Parona, by then a
lieutenant, was assigned to the
ironclad battleship . During World War I, Parona initially took part in ground fighting on the
Isonzo front with the
Naval Brigade; he was awarded a
Silver Medal of Military Valor for an action near
Monfalcone in May 1916. Later in the war, he was given command of the
submarine F 17, distinguishing himself and receiving a
Bronze Medal of Military Valor for an action against a convoy in the
Adriatic Sea in July 1918. He remained in the submarine branch even after World War I; he was promoted to
lieutenant commander in 1922 and to
commander in 1927. After attending the Naval Warfare Institute, he was assigned for three years to the office of the
Chief of Staff of the Navy. In 1932 Parona, together with Captain
Vladimiro Pini, translated in Italian
Hermann Bauer's
Das Unterseeboot: Seine and Bedeutg als Teil. fleets; Seine Stellg im Völkerrecht; Seine Kriegsverwendg; Seine Zukunft, a treatise on the design and the tactical use of the
U-Boat. Promoted to
captain in 1937, for the next two years Parona held the office of naval attaché at the Embassy of Italy in
Paris. Between August 1936 and August 1937 Parona was the commanding officer of the
heavy cruiser Trieste, and then he became chief of staff of the 3rd Naval Division. In 1938, after promotion to
rear admiral, he became deputy inspector of the construction and testing of the new ships built for the Navy, and then head of cabinet of the Ministry of the Navy in
Rome. ==World War II and aftermath==