The Era Fascista was a calendar era used in the Fascist-ruled Kingdom of Italy. The March on Rome, or more precisely the accession of Mussolini as prime minister on 29 October 1922, is day 1 of Anno I of the Era Fascista. The calendar was introduced in 1926 and became official in Anno V (1927). Each year of the Era Fascista was an Anno Fascista, abbreviated A.F.