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
An off-centred disk version of the swastika flag was used as the civil ensign on German-registered civilian ships and was used as the jack on (the name of the German Navy, 1933–1945) warships. The flags for use on sea had a through and through image, so the "left-facing" and "right-facing" version were each present on one side while the national flag was right-facing on both sides.