response: Oh sure.  Sometimes it's been considered a necessary part of a uniform!  At other times it's been prohibited.
original_response: It is common in the military for facial hair to be prohibited. Which seems to make sense.
history: I wish I could grow more facial hair. Oh really?  Facial hair's typically seen on human males. Yeah I hope I don't see many girls with beards haha. Hah!  Oh hey, did you know that there are some cultures where it's uncommon to have facial hair?  In cultures like that, some associate beards with a dangerous demeanor, or poor hygiene! Wow that would be useful information for some travellers to know!  What about the military and facial hair, know anything about that?
knowledge: Facial hair in the military has been at various times common, prohibited, or an integral part of the uniform.