I think you are right. I also noticed that every living secretary of defense released a letter saying that its a REALLY bad idea to involve the military in politics. That seemed to come out of the blue and the only reason I could imagine is that somebody has been sniffing around the military.
Hopefully that will be the end of it. Trump has also requested that all white supremacists (not expressed that way) merge on Washington, DC tomorrow night. Oh, and Washington, D.C. have called out the National Guard for that night as well.
I suspect its fairly obvious that Trump is trying something. The question is whether it succeeds or not.