following years Olimpia will be joined by several other local football clubs from the city of Rijeka, and will continue the legacy of Fiumei Atletikai Club as the main city club, when Atletico discontinued its football section in the course of the 1910s. Among the many clubs being founded in town during these years, a side in particular will soon rise as a fierce arch-rival to Olimpia: Doria (later renamed into CS Gloria) arose from the proletarian classes and the humble old town dwellers of the industry-rich port town on the Adriatic. While Olimpia was associated with the wealthier classes, mostly players from working-class families performed for Gloria, and therefore the club found most of its sympathisers among the poorer part of the population. Olimpia was renamed into Olympia on 9 January 1918 during a meeting of its board and the new president became the Fiuman writer Antonio de Schlemmer, possibly as an anti-irredentist move. During these years it achieved its first major local and international successes: it became the champion of the Free State of Fiume championship in 1921, and it won several Julian March and North-Eastern Italian championships in the following years, soon becoming the strongest side in the Alpe-Adria region. 1926–1943 On September 2, 1926, following Mussolini's reforms of the FIGC and the 1924 Fiume putsch led by Italian fascists, which brought to the annexation of the independent Free State of Fiume to Italy, Olympia was forced to merge with its arch-rival Gloria into the Unione Sportiva Fiumana. Pietro Pasquali was picked as the new president of the club. Two years later, Fiumana won its first national trophy when it reached first place in the Italian Federal Cup. The following season saw the club playing in the Italian Serie A, with some of the biggest Italian clubs such as Ambrosiano (today's Inter, also forced into a brand image change by the new regime), Juventus and Napoli played at the Kantrida stadium (renamed to Stadio Borgomarina in those years). Despite a decent performance in Serie A, the now impoverished by the annexation city, now cut off from its natural economic hinterland, was not in the financial position to compete with the biggest cities in Italy and following these successes the club had to see many of its stars signed by major Italian sides. This brought the club to pass most of the '30s and '40s between the second