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.
Iron Cross
The Black Cross was used on the naval and combat flags of the German Empire.
The Black Cross was used as the symbol of the German Army until 1915, when it was replaced by a simpler ".
The of the Weimar Republic (1921–35), the of Nazi Germany (1935–46) and the (1 October 1956 to present) also inherited use of the emblem in various forms. The traditional design in black is used on armored vehicles and aircraft, while after German reunification, a new design in blue and silver was introduced for use in other contexts.