I think they would. My brother in law is a Captain in the army. He said he would love to be called in to quell a riot so he could give someone the butt of his rifle.
No disrespect to you, but that guy is stupid.
That is *exactly* the sort of attitude that drove many of the law enforcement officers - many from the far corners of the country - who volunteered to "help" in New Orleans. Some of them drove from the west coast just for the opportunity to indulge in that sort of sh!t (and risk little possibility of "career limitation").
Yes, there were some guardsman involved in firearm confiscation too... both national guard and USCG.
Suffice to say that there are enough such people in both military and civilian law enforcement to be of great concern to anyone who values their constitutional liberties.
New Orleans was, of course, a unique case. It's a small city and geographically easy to isolate... yet it took an amazing amount of manpower to lock down. I don't think that martial law is enforceable on a larger scale, particularly not when the people are furious rather than frightened.