They don't break it down further; they explicitly state what they meant and say so time and time again.

It's the part that drives me nuts - do any deep dive on what the various political commentary was by various thinkers of the time, and the idea that the Founding Fathers meant 'military' when they said 'militia' is absolutely insane. Several of them call out that militia meant 'everyone EXCEPT the government', and proudly touted the idea that a standing military was just short of tyranny.

Hell, some of Thomas Jefferson's commentary on the matter could literally be written as 'Sports are Gay, Gun is best, go innawoods and be awesome.'

Back when I was in college, I saw plenty of courses offering on military history and local history, but not once did I see anything regarding the founding fathers and the 2nd amendment. I wish I had, but any professor that would have tried such would have been lynched in quick order, I bet.

Hell, I would have been satisfied on a course on the Federalist Papers alone, or the political environs of the American Revolution. Instead, we get courses on Harry Potter and Second Life. Bah.