He was born in Naples in 1881, the son of Duke Giustino Dusmet,
Marquis of Smours, and of Anna d'Evoli, Marquise of
Trignano; his was an aristocratic family closely linked to the
Bourbons. After enlisting in the
Royal Italian Army, in 1904 he began to attend the
Royal Academy of Modena as a
cadet officer, graduating on 4 September 1905 as cavalry
second lieutenant and being assigned to the 11th Light Cavalry Regiment of
Foggia (Cavalleggeri di Foggia). He was promoted to
lieutenant on 12 October 1908; from 2 April 1911 he was placed on leave for family reasons for six months. In 1912 he took part in the
Italo-Turkish War, and on 31 December 1914 he was promoted to
captain, serving with the 13th Regiment "Cavalleggeri di Monferrato". He participated in the
First World War with the 20th Regiment "Cavalleggeri di Roma", distinguishing himself on the
Karst Plateau in 1916. On November 18, 1917 he was transferred to the
infantry and assigned to the 32nd Infantry Regiment, Marche Infantry Brigade. After the war he continued serving in the 32nd Infantry Regiment with the rank of
major, and was also an alternate judge at the territorial military court of Naples from 1 May 1924. From 10 June 1932, after promotion to
colonel, he commanded the 1st Infantry Regiment "Re", then the military district of
Siena and, from 20 May 1937, the
military prisons of the Royal Italian Army until the beginning of 1938. He was promoted to
brigadier general on 20 April 1938 and assigned to the Army Corps of
Rome for special assignments until early 1939, when he was transferred to the reserve. ==References==