IRT your question, local roadblocks/check points on the perimeters of towns is what I would be expecting. No, I don't wish to interact or be questioned by local folk that I don't know. I feel it is best to just go around guarded areas versus trying to take a shortcut and perhaps getting my equipment confiscated and myself injured or killed.
IRT the military, avoidance is still my preferred tactic, if possible. Otherwise, I'll sit out in the open in front of a patrol and wait for them to reach me and then we can palaver over who I am and what I am trying to do, and hopefully they will be satisfied with my answers (and documentation, including Military ID).
The main idea is to move safely from point A (work) to point B (home) while minimizing the number of people who see, hear, or smell me. This also minimizes possible bad outcomes from such meetings. I primarily plan on moving along east-west RR tracks but not necessarily marching down the tracks as much as paralleling their right-of-way. This keeps me in the brush (slower movement) and better able to see others before they see me. It maximizes options for safe transit, resupply along the route, and possibly being able to pick up some weapons along the way. If things appear to be cool, then I can jump onto the tracks and make better time, at least until I come up to a town, then I'll probably break away from the tracks and skirt around the town to come back onto the tracks.
That's my plan and my reasoning.