There is no defualt. If you read the 1792 militia act. You would know your not in/a militia defualt or otherwize. You have no regiment, commanding officer, training , hell I bet you dont even have your napsack.
The Militia Act of 1792 was never well enforced, and from the very beginning there was no real penalty associated with not following the act to the letter. Militia's proved to be well suited for defense, but poorly suited as offensive units under federal control and G. Washington was trying to put in place a system that would enhance that specific militia capability -- enemies foreign. Some organizational issues were stated in the act but many were not, and it was generally regarded as being more of a recommendation than anything else.
However, the arms intent behind the militia (even in the Act) was very clear in that the unorganized militia would be the citizens of the US (within certain constraints that shaped society in general at the time) and that they would have their own arms. Nor does this reflect the "enemies domestic" rationale behind the 2nd.
You can look at the position of person who is credited with essentially drafted the 2nd, Trench Coxe. I don't think the intent of the 2nd gets any clearer than this. It addresses both federal AND state concerns:
The powers of the sword are in the hands of the yeomanry of America from sixteen to sixty. The militia of these free commonwealths, entitled and accustomed to their arms, when compared with any possible army, must be tremendous and irresistible. Who are the militia? Are they not ourselves... Congress have no power to disarm the militia. Their swords, and every other terrible implement of the soldier, are the birth-right of an American ... The unlimited power of the sword is not in the hands of either the federal or state governments, but, where I trust in God it will ever remain, in the hands of the people.
Even a Federalist like Hamilton, who supported a more organized militia model (believing, debatable, that the good people of a state would not willingly follow a federal tyrant stated):
[T]he people, without exaggeration, may be said to be entirely the masters of their own fate. Power being almost always the rival of power, the general government will at all times stand ready to check the usurpations of the state governments, and these will have the same disposition towards the general government. The people by throwing themselves into either scale, will infallibly make it preponderate. If their rights are invaded by either, they can make use of the other as the instrument of redress. How wise will it be in them by cherishing the union to preserve to themselves an advantage which can never be too highly prized!
He certainly would not have supported the current select militia state/federal National Guard system to fill that role. He even acknowledges that the state government just might have to be addressed as a tyrant.
The more formal, organized role of the militia has certainly been neglected. Militia's against foreign enemies work best on defense, and worst on offense and that purpose has been largely taken over by the National Guard (a federal, select militia) because of that reality. This was not entirely unforeseen and was part of the whole general/select militia/standing army debate at the time.
However, that neglect does not eliminate the central conceptual role of an armed population deterring domestic tyranny. As legal scholars Brannon P. Denning and Glenn Harlan Reynolds summarize on the issue:
In this light, the Second Amendment could be understood as an example of very careful drafting indeed: a government obligation (to maintain a militia) coupled with an individual right (to keep and bear arms) that ensures that the key element of a universal militia (an armed citizenry) cannot be extinguished by government neglect.[129] At the very least, the clear constitutional statement regarding the necessity of a well-regulated (universal) militia for the security of a free state should give us pause. The logical consequence of this statement is that a state lacking such a militia is either insecure or unfree.[130]
Charon