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 the Western European Union
The current flag was in use only since 1993. Prior to that there was a similar design but with only nine stars (before Greece became a member) and the stars towards the base of the flag were progressively larger than those at the fringe. This design replaced the flag of the Western Union, the organisation that was transformed into the WEU upon the entry into force of the Modified Brussels Treaty.