[1] San Giorgio entered service in the Regia Marina (Royal Italian Navy) with the name Pompeo Magno in 1943 shortly before the armistice.

Once the work was completed, the ship entered service in the Italian Navy on 1 July 1955 with the pennant number D 562.

From 1963 and until 1965, San Giorgio was again subjected to modification works at the Arsenal of La Spezia to be transformed into a training ship for the students of the Naval Academy of Livorno, carrying out this task until it was disarmed in 1980.

Given the good overall condition of the hull in 1950 it was decided to rebuild the ship as a destroyer and renamed San Marco.

Once the work was completed, the ship entered service in the Italian Navy on 1 January 1956 with the pennant number D 563, serving until 1971 when it was disarmamed.