Yeah. So that if needed, they can call upon their citizens (farmers, shopkeepers, businessmen, politicians, et cetera) one and all, to form a militia and fight for their particular state. Now, before you say it, the National Guard of each state is actually a branch of the army (i.e., Army National Guard) and when called upon, must fight for the federal government, even on foreign shores. The Founding Fathers, envisioned a force that defended each state, in case the federal government should turn on them.?1. Well regulated militias: The 2nd Amendment afford "all" citizens the right to bear arms so that should a "well regulated citizens militia be needed," they would have their own weapons to provide for that militia.
The 2nd says a militia is needed and that's why the right to bear arms shall not be infringed. Nothing about self defence in there.