GWG, if they want to rob us and not simply blow us up, they'd need to send troops/raiders to the surface to loot everything. Now, I can see that you're saying if raiders come with a ship we're fucked since we can combat ground troops but not orbital ships, which is where the artillery emplacements come in. I'm hoping to eventually upgrade them to full railguns capable of at least limited orbital interception, and maybe even a few surface-to-orbit missile emplacements if we get advanced enough.
Keep in mind that this is a frontier colony, and help from the central government might be days or even weeks away-if they come at all and don't just write us off(that doesn't even get into how we contact them!). I'd rather not disband the militia on the premise that if raiders come we be fucked anyways, I'd rather go down in a blaze of glory
As for the fence, yeah, a full fence might be a little much right now, so I'll go with that biocrete marker idea. Also, good point about windmills, I guess I'll have to run a tap from the power plant for now, though isn't there a way to make capacitors from silicon? If so, making a bank of large capacitors can help alleviate the draw and load of the coilguns if they need to be fired.
Heh, I guess the base is bigger in my head than it should be, so the only things it has right now is the barracks, vehicle bay, and comm tower, and has markers around it to deliniate the boundaries.
Note: If possible, if we can recycle enough steel/ferrous material from the wreck, instead of coilguns I'll start with full railguns(from my understanding coilguns are easier to engineer, but if we have enough materials railguns are more powerful)