Flag of Germany
While the use of black-red-gold had been suggested in the Soviet zone in 1946, the Second People's Congress in 1948 decided to adopt the old black-white-red tricolour as a national flag for East Germany. This choice was based on the use of these colours by the National Committee for a Free Germany, a German anti-Nazi organisation that operated in the Soviet Union in the last two years of the war. In 1949, following a suggestion from Friedrich Ebert, Jr., the black-red-gold tricolour was instead selected as the flag of the German Democratic Republic upon the formation of this state on 7 October 1949. From 1949 to 1959, the flags of both West and East Germany were identical. On 1 October 1959, the East German government changed its flag with the addition of its coat of arms. In West Germany, these changes were seen as a deliberate attempt to divide the two Germanys. Displaying this flag in West Germany and West Berlin—where it became known as the (divider-flag)—was seen as a breach of the constitution and subsequently banned until the late 1960s.
National colours of Germany
The colours ultimately hark back to the tricolour adopted by the "Urburschenschaft" of Jena in 1815, representing an early phase in the development of German nationalism and the idea of a unified German state. Since the 1860s, there has been a competing tradition of national colours as black, white, and red, based on the Hanseatic flags, used as the flag of the North German Confederation and the German Empire. The Weimar Republic in 1919 opted to re-introduce the black, red, and gold tricolour. This was controversial, and as a compromise, the old flag was reintroduced in 1922 to represent German diplomatic missions abroad. As a reaction, "Reichsbanner Schwarz-Rot-Gold" was an organization formed in 1924 representing the parties supporting parliamentary democracy, and for the remainder of the existence of the Weimar Republic, black-red-gold represented the centrist parties supporting parliamentary and black-white-red represented its nationalist and monarchist opposition.