The country's existing regional leagues were replaced by 16 Gauligen and Post failed to qualify for the new Gauliga Berlin-Brandenburg (I) after its 7th place Oberliga finish.

Following World War II, occupying Allied authorities banned most organizations across the country, including sports and football clubs, as part of the process of de-Nazification.

Post was lost in 1945 and not re-formed until 1949 when the club re-appeared as Blau-Gelb Berlin, named for the traditional blue and yellow of the national postal service.

[2] The division of the city into eastern and western sectors during the Cold War led to the formation of the postal workers club BSG Post Berlin which became part of the separate football competition that emerged in East Germany.

In 2005, the club was renamed Pro Sport Berlin 24 and does not field a senior men's side anymore but still offers women's football.