Not even.
The Framers recognized that trying to "well train" the people would take away from the labors required to maintain the households of the people. "Well trained" was seen as the purview of standing armies, which the militias were not intended to be.
Back then, "well regulated" simply meant that the people had their own arms, that they kept them in good working order, that they were competent in its use, and that they periodically organized to demonstrate the above.
Alexander Hamilton wrote about this in Federalist 29:
"The project of disciplining all the militia of the United States is as futile as it would be injurious, if it were capable of being carried into execution. A tolerable expertness in military movements is a business that requires time and practice. It is not a day, or even a week, that will suffice for the attainment of it. To oblige the great body of the yeomanry, and of the other classes of the citizens, to be under arms for the purpose of going through military exercises and evolutions, as often as might be necessary to acquire the degree of perfection which would entitle them to the character of a well-regulated militia, would be a real grievance to the people, and a serious public inconvenience and loss. It would form an annual deduction from the productive labor of the country, to an amount which, calculating upon the present numbers of the people, would not fall far short of the whole expense of the civil establishments of all the States. To attempt a thing which would abridge the mass of labor and industry to so considerable an extent, would be unwise: and the experiment, if made, could not succeed, because it would not long be endured. Little more can reasonably be aimed at, with respect to the people at large, than to have them properly armed and equipped; and in order to see that this be not neglected, it will be necessary to assemble them once or twice in the course of a year.
But though the scheme of disciplining the whole nation must be abandoned as mischievous or impracticable; yet it is a matter of the utmost importance that a well-digested plan should, as soon as possible, be adopted for the proper establishment of the militia. The attention of the government ought particularly to be directed to the formation of a select corps of moderate extent, upon such principles as will really fit them for service in case of need. By thus circumscribing the plan, it will be possible to have an excellent body of well-trained militia, ready to take the field whenever the defense of the State shall require it. This will not only lessen the call for military establishments, but if circumstances should at any time oblige the government to form an army of any magnitude that army can never be formidable to the liberties of the people while there is a large body of citizens, little, if at all, inferior to them in discipline and the use of arms, who stand ready to defend their own rights and those of their fellow-citizens. This appears to me the only substitute that can be devised for a standing army, and the best possible security against it, if it should exist...
Where in the name of common-sense, are our fears to end if we may not trust our sons, our brothers, our neighbors, our fellow-citizens? What shadow of danger can there be from men who are daily mingling with the rest of their countrymen and who participate with them in the same feelings, sentiments, habits and interests?
-PJ
Back then, “well regulated” simply meant that the people had their own arms, that they kept them in good working order, that they were competent in its use, and that they periodically organized to demonstrate the above.
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Yeah, that means “well trained”. Don’t kid yourself. Close order drill. Marching, cadence, learning to follow commands e.g. what we call drill & ceremony today were very important in those days, that the squad or company or regiment wasn’t a bunch of untrained ragbags, but could move (and shoot) as one body.
The reason they wanted everyone to maintain their own weapon, this saved considerable time. When the militia was activated, they could report immediately to where the trouble was, eliminating the time-wasting intermediate step of everyone having to first travel to a central armory location to pick up weapons.
But still, everyone is missing the point. Again. This is all very interesting minutiae, trivia or historical dandruff. The only important part we need concern ourselves is “the right of the people to keep and bear arms shall not be infringed”