During her deployment to Turkey, "Caio Duilio" entered the Black Sea to support the White Russians in the Russian Civil War, from 23 June to 13 July. During this period, she was transferred to the Levant Squadron of the Italian Navy. She returned to Izmir after completing her deployment to the Black Sea, and remained there until 9 September, when she was relieved by the battleship . She returned to Taranto on 12 September, and was placed in reserve. Placed back into service in 1920, "Caio Duilio" went to Albania on 30 June to support the Italian Army contingent occupying the country, and participated in their withdrawal on 5 September. The following year, she was assigned to the Dodecanese Squadron and cruised in the eastern Mediterranean. She returned to Constantinople as part of an Allied fleet from 27 July to 10 November 1921.