03.05.1905
foundation as 1. Bielefelder FC Arminia
__.__.1907
integration of FC Siegfried Bielefeld
07.07.1919
merger with Bielefelder TG 48 to TG Arminia Bielefeld
06.11.1922
new foundation as 1. Bielefelder FC Arminia
30.01.1926
renaming in Deutscher Sport-Club (DSC) Arminia Bielefeld
25.06.1943
syndicate during war with VfB Bielefeld (KSG Bielefeld)
__.__.1945
dissolution of the syndicate