Uniform of King Frederick the Great of Prussia from the 1st Battallion Guard with the Order of the Black Eagle from the 18th Century on display at the Deutsches Historisches Museum in Berlin
Frederick’s reign is remembered for it’s militarism which would go on to inspire unsavory historical figures such as the despot Adolf Hitler and many neo-Nazis. But he was a figure of the Enlightenment and liked to fill his court with free thinkers such as Voltaire and, quite controversially for the time, Atheists.
He was an open homosexual as well. After one particular defeat on the battlefield he wrote “Fortune has it in for me; she is a woman, and I am not that way inclined.”