I found this article entitled, "The Moustache to Rule Them All". I found it an interesting read, I thought you might enjoy it as well.
Moustaches Throughout History - Historic UK
Is it more than a coincidence that the rise and fall of Empire coincides with the rise and fall in popularity of the moustache? Between 1860 and 1916, Kings Regulations decreed that every soldier in the British Army was forbidden to shave his upper lip...
www.historic-uk.com