Flag of Germany
When Heinrich XI, Prince Reuss of Greiz was appointed by Joseph II, Holy Roman Emperor to rule the then-new Principality of Reuss-Greiz on 12 May 1778, the flag adopted by the "Fürstentum Reuß-Greiz" was the first-ever appearance of the black-red-gold tricolour in its modern arrangement in any sovereign state within what today comprises Germany – the Reuss elder line that ruled the principality used a flag whose proportions were close to a "nearly square"-shape 4:5 hoist/fly ratio, instead of the modern German flag's 3:5 figure.
Flag of Germany
The design of the Nazi flag was introduced by Hitler as the party flag in mid-1920, roughly a year before (29 July 1921) he became his political party's leader: a flag with a red background, a white disk and a black swastika "(Hakenkreuz)" in the middle. In "Mein Kampf", Hitler explained the process by which the Nazi flag design was created: It was necessary to use the same colours as Imperial Germany, because in Hitler's opinion they were "revered colours expressive of our homage to the glorious past and which once brought so much honour to the German nation." The most important requirement was that "the new flag ... should prove effective as a large poster" because "in hundreds of thousands of cases a really striking emblem may be the first cause of awakening interest in a movement." Nazi propaganda clarified the symbolism of the flag: the red colour stood for the social, white for the movement's national thinking and the swastika for the victory of the Aryan peoples over Jewry. Several designs by a number of different authors were considered, but the one adopted in the end was Hitler's personal design. Albert Speer stated in his memoirs that "in only two other designs did he (Adolf Hitler) execute the same care as he did his Obersalzberg house: that of the Reich War Flag and his own standard of Chief of State".