Please read the following very slowly for comprehension:
The militia was considered to be all males capable of bearing arms, excepting those whose religion proscribed against such. Such citizens were EXPECTED to bring their own arms when called.
If you want to argue about 'National Guard', I can point you to the reservations in the Federalist about 'select militia'.
Section 8. The Congress shall have power
To provide for calling forth the militia to execute the laws of the union, suppress insurrections and repel invasions;
To provide for organizing, arming, and disciplining, the militia, and for governing such part of them as may be employed in the service of the United States, reserving to the states respectively, the appointment of the officers, and the authority of training the militia according to the discipline prescribed by Congress;