Beards have had a long and rich history in the military,
we often see pictures of rough sappers with big beards and big axes, or French Poilus with lavish moustaches and long goatees.
But at times beards were also forbidden for soldiers, for example, only after Boulangers reforms beards became legal in the army of the third republic.
What is the history of beards in the armies of other nations?
What are the hazards of having a beard and what are the benefits?
I suppose it is a danger for soldiers to get stuck in mechanics or get lice but in colder climates a soldier would be happy with a big beard.