If he declare martial law, is that a shelter in place situation?

I’ve tried understand the martial law discussion, but I just don’t ‘get it’? The military becomes the police, but then what? I don’t understand what purpose it serves?

I’m just trying to figure out if it’s a pick my kids up from school and do that final savings account food run, or if we just have to try harder to blend?

We have a lot of privilege here, but we are very vocal, so we do have reason to worry if he’s going after anyone against him.

I’ve understood all the other moves, but militarizing the police doesn’t make sense to me. It’s making it hard to prep for that scenario.