There was an XIII Corps in World War I formed in Rome on 20 May 1915 and dissolved on 15 December 1918.
It was reconstituted in 1926 as Military Command of Sardinia and renamed XIII Army Corps on 11 October 1934.
During World War II, the XIII Corps was responsible for the defense of Sardinia.
In May, the Corps became subordinate to Antonio Basso, the Armed Forces Commander of Sardinia.
On 13 January 1945, the Corps was dissolved and reformed into the Regional Military Command of Sicily.