He was promoted to lieutenant in 1914; during World War I, he was initially assigned to the Command of the Battle Squadron, and was later given command of torpedo boats operating in the Adriatic Sea.[1]
During the 1920s and early 1930s, Sansonetti commanded destroyers and then destroyer squadrons and flotillas; he was promoted to lieutenant commander in 1922, commander in 1926 and captain in 1932.[1] In the same year he was assigned to the press office of the Head of Government, and in 1934 he became Chief of Staff of the Taranto Naval Department.[1] In 1935 he was given command of the heavy cruiserFiume, on board which he was involved in the early stages of the Spanish Civil War.[1]
In late 1936, Sansonetti was assigned to the office of the Chief of Staff of the Navy, where he remained till 1939.[1] In 1938, he was promoted to rear admiral, and in the following year he became vice admiral.[1] In August 1940 he was given command of the 7th Cruiser Division, with flag on the light cruiserEugenio di Savoia.[1]
In the 1930s Sansonetti also wrote several essays on naval policy, and he was among the supporters of the building of new battleships (the Littorio class).[1]
World War II and later years
When Italy entered World War II, on 10 June 1940, Sansonetti was still in command of the 7th Cruiser Division.[1] In this role, he participated in the Battle of Calabria on 9 July 1940.[1] In August 1940 he was appointed commander of the 3rd Cruiser Division, with flag on the heavy cruiser Trieste.[1]
Sansonetti left the command of the 3rd Cruiser Division in April 1941, and in July he became Deputy Chief of Staff of the Italian Navy.[1] He played a major role in the planning of the Regia Marina's strategy in the following two years, especially in the convoy war for the supply of Axis forces in North African Campaign.[1]
When Italy signed an armistice with the Allies, on 8 September 1943, and Germany launched Operation Achse in order to occupy Italy and neutralized the Italian armed forces, Sansonetti remained at the naval headquarters in Rome (Supermarina) and assumed provisional command over the naval forces, while the Chief of Staff, Admiral Raffaele de Courten, followed Victor Emmanuel III in his escape towards Brindisi.[1] In the next days, Sansonetti directed naval operations and issued orders about the armistice to ships and submarines at sea and shore commands; on 13 September 1943, after Rome surrendered to the Germans after a brief resistance, he gathered his officers and informed them that Supermarina had to cease all activities, on the Germans' orders.[1] On 25 September Sansonetti left Rome and headed south on foot; he crossed the frontline and reached Brindisi, where the king and the government had taken refuge, after a dangerous and eventful journey.[1] In Brindisi, he resumed his duties as Deputy Chief of Staff of the Navy.[1]
In April 1944 Sansonetti became president of the High Council of the Navy, an office he held till February 1951.[1] He died in Rome on 7 November 1959, after falling from his horse.[1]
Charles D. Mallett, Mussolini and the Origins of the Second World War, 1933-1940, Basingstoke, Palgrave MacMillan Ltd., 2003, ISBN1-4039-3774-5.
Charles D. Pettibone, The Organization and Order of Battle of Militaries in World War II. Vol.VI, Milano, Trafford Publishing, 2010, ISBN1-4269-4633-3.
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