In the 1930s the erstwhile "liberal democracies" of Western Europe banned the wearing of political uniforms to thwart the home grown fascist parties.
Using fascist methods to fight fascism.
In my 4 years in the Army 1967-1971-and I was a Green Beret-I met only one NCO who was a gun guy, nobody into martial arts/hand to hand combat.
These "militia" groups do a better job of training than the Army does IMHO.
"Well regulated" refers to drill and discipline, the drills were often called "tactics" because that was how they actually fought. Baron Von Steuben's great accomplishment was that he got the Main Army drilled and the drill was standardized. Everybody was on the same sheet of music.
The militiaman provided his own firearm, kept it at home. It was HIS. The only requirement was that it was supposed to be .75 caliber, like the Brown Bess. How much difference that made with smoothbores...?
I have seen one reenactor show up as militiaman with a fowling piece, not "standard" but very authentic.