Your Marine with the 'tache is accurate, but could be in trouble.
The Regs at the time were, no hair over the lips and no longer than the edge of the mouth.
In 1975 I was stationed with the 1st Marine Div.
Had the Div. Commander mention to me that my mustache was to long.
I had better do something about it.
I laugh about it now, was not so funny then.