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.
List of flags of the German Navy (1935–1945)
The Reichskriegsflagge, which was introduced on 7 November 1935, was widely used in the Wehrmacht. Thus, it also served the Kriegsmarine as the naval ensign, which was hoisted on Flag days regardless of the location of the ship. These were the 1 January (New year), the 18 January (founding day of the Empire 1871), the 30 January ("day of national survey"), the 20 April (Hitler's birthday), the 1 May ("Labor Day") and 31 May (memory of the Battle of Jutland). In addition, ships in home waters, had to hoist the Reichskriegsflagge on these following days: on 1 March (reintegration of the Saarland), on 29 August (the day of the founding of the Prussian Navy in 1859), on the first Sunday after Michaelmas and on the day of the Harvest festival. Regardless of these days, all warships that received a head of state were obliged to show the Reichskriegsflagge.