Flag of Germany
With the formation of the short-lived Weimar Republic after World War I, the tricolour was adopted as the national flag of Germany. Sixteen years later following World War II, the tricolour was again designated as the flag of both West and East Germany divided states in 1949. The two flags were identical until 1959, when the East German flag was augmented with the coat of arms of East Germany. Since reunification on 3 October 1990, the black-red-gold tricolour has become the flag of a reunified Federal Republic of Germany.
Flag of Germany
In 1955, the inhabitants of the French-administered Saar Protectorate voted to join West Germany. Since its establishment as a separate French protectorate in 1947, the Saar had a white Nordic cross on a blue and red background as its flag. To demonstrate the commitment of the Saar to be a part of West Germany, a new flag was selected on 9 July 1956: the black-red-gold tricolour defaced with the new coat of arms, also proposed on this day. This flag came into force on 1 January 1957, upon the establishment of the Saarland as a state of West Germany.