Interpretations change.
The "plain language" doesn't say anything about private citizens tho.
Militia doesn't mean private citizens either. They are an organized part of the military.
Definition of militia
1a: a part of the organized armed forces of a country liable to call only in emergency
The militia was called to quell the riot.
b: a body of citizens organized for military service
2: the whole body of able-bodied male citizens declared by law as being subject to call to military service
a part of the organized armed forces of a country liable to call only in emergency; a body of citizens organized for military service; the whole body of able-bodied male citizens declared by law as being subject to call to military service… See the full definition
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