These are the meaning of those words 52 years after they were written. It is still there meaning today. There is nothing about well equipped in these definitions, or in the 2nd amendment.
What about our situation is in good order? Subject to rules or restrictions, that is what was meant. What is broken or violated by regulating These militias. That is what this single sentence says.These were the most advanced thinkers of there day. So I'm pretty sure they understood the meanings of the words they used.