The club was founded as FC Preußen on 30 April 1906 and has its roots in a group formed at the Johann-Conrad-Schlaun Grammar School. Historians consider patriotic reasons for naming the club after Prussia. At first the club did not have its own ground and was playing at a parade ground of the army at Loddenheide. General Baron von Bissing gave permission only if the goals would be taken down again after training. On 24 June 1907 the Eagles won their first game against FC Osnabrück with 5–0. After successfully applying for the Western German League system, the team initially competed in the second tier. In 1908 the Eagles were promoted to the first league and in 1914 they won the Westphalian Championship. Between 1916 and 1926 the club played on Münstermannplatz, which was close to the current ground, the Preußenstadion. In 1921 they won the Championship a second time and also took on their current name.