__.__.1849
foundation as Männerturnverein 1849 Flensburg
__.__.1865
merger with Flensburger TV 1860 and renming to Flensburger Turnerschaft 1865
__.__.1935
merger with Flensburger MTV 1881 and renaming to Flensburger Turnerbund
__.__.1945
forced dissolution after World War II
__.__.1946
new foundation and merger with Flensburger SC 1945 and renaming to Flensburger Turn- und Sportclub
__.__.1947
renaming to Flensburger Turnerbund
__.__.1955
renaming to Flensburger Turnerbund 1865
__.__.1973
merger with TSV Vorwärts 97 Flensburg and renaming to Turn-und Sportbund Flensburg