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 old black-white-red tricolour of the German Empire is still used by monarchists and those members of German royalty who long for the peaceful reintroduction of a German democratic monarchy. This use of the old flag is almost completely overshadowed by its prevalent use by the far right; since the aforementioned ban on all Nazi symbolism ("Hakenkreuz", the "Schutzstaffel's" double sig rune, etc.) is still in effect within today's Germany, the far right have been forced to forego any Nazi flags and instead use the old imperial flag, which the Nazis themselves banned in 1935.