The Posse Comitatus reference was in rebuttal to your wild assertion that U.S. military personnel could somehow go door to door and collect legally owned firearms.
Yes, if an officer disagrees with an order or has a conflict with his chain of command, including the Commander-in-Chief, then resignation is his or her only legal option. The military is not a debating committee.
Well, the house to house confiscation plan is in writing, and was prepared during the Clinton admin.
You can bet that it will commence at some point.
Your theory doesn’t fit the real world worth sour owl crap.