We built shoothouses on our firebases as well as anything else you could think of that giant blocks could do. You fold them out, arrange them how you want, wire them together, then pour dirt in them until they are full. Then next layer.This would be ideal. I want a compound like they used overseas. I forgot where, but I have seen a commercial range that used them as exterior perimeter and inside division for the separate parts of the range. They are big and sturdy. It would help to have a front end loader to fill and move them...and some privates for support
If you go three high, your base needs to be two wide or they won't find your body for a few years until they figure out it fell on you. lol
Maybe I could/should utilize skeletons from the laser cutter at work? Be better than hog fence and they're essentially free. Could weld a few together and line it with fabric then backfill?
You might be out-thinking it. These are just Gabion walls that some brit figured out to put lawn fabric in and sell them to the GOV for millions. Galavanized square wire fence with fiber weed fabric to hold in the dirt. You see fences and walls made out of them in the fancy neighborhoods. If you use rock and concrete chunks to fill them, then you don't need the fabric and you save more money. Or combo with fabrication and wire and rocks.
Gabion wall