D. Upton-
"I cannot find a Confederate law setting the standards to the legal use of "negro or negroes" or exactly where in Confederate law it states that a "negro or negroes' cannot be armed"

There were only state laws and they varied. North Carolina passed a law in February 1861 making it illegal for a free black to be armed. No exceptions.
But violation was only a misdemeanor with a $50 fine. Obviously, Alabama and Louisiana (with free black militias) had a different view of the subject.