You won’t hear any argument from me on this point, I do believe the states should organize and train adults with some degree of competency
As you used it in that statement, the term “adults” is synonymous with “well regulated militia” as used in the constitution, and “people” as I have used the term.
It is because we are militia/people/adults that we can be compelled to attend the training you describe, or be otherwise drafted into service.
Squares and rectangles, you can’t generalize a subset as synonymous with its superset.
This is true, there is not a complete overlap, but I accounted for the non-squares in my last comment. My point is not that militia contains absolutely all members of “we the people”. My point is made when “equilateral rectangles” are the general rule, and “non square” is an exceptional case.
When you see a random person on the street and have no special information about them, It is unreasonable to presume they are not a member of the militia.