noncom = 'enlisted person'

[W Brewer]

In my garrison days, NCO's were definitely enlisted (corporal on up). But
EM's were not allowed in the NCO club; they had their own Enlisted Men's
club. Corporals (E-4) could get into the NCO club, but Spec-4's (E-4) could
not. Draftees & reservists were unwelcome anywhere.

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