[quote=Flooby Badoop]
Patrols are just raised levies sent to go guard a large swathe of land. Since the soldiers at your forts and outposts are already raised [ they are, aren't they? ] then you don't need to do anything extra, and can just send them on patrol whenever you feel like it.And I have been thinking about the cost, actually. I mean, the largest castle or fortress is only going to be a handful of square miles, and Lundland has 200,000 sq. miles [ thus each inch of the map is around 125 miles ]. That makes the island between 6,000 and 8,000 sq. miles, just going off a rough guesstimate. Since it costs 125,000 bullis just to build a Great Wall around a few square miles, the expense of building said wall around the entire island would dwarf the income of every single lord in Lundland combined.So, if you want an island fortress, you'd probably be better off just looking for a tiny island the size of, say, Malta or something, and just building it there. If you'd like to simply fortify the island, but not with a Giant wall surrounding it, you'd be better off with numerous defensive positions carved out every mile or two around the island, with signal fires allowing for quick communication between each mini outpost.
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I would prefer at least a Stone Wall around the entire island. Even if I am only building a few or so (hundred? I don't know) miles ever so often. I know it would take forever, but ..."They've been building walls there for 2,000 years!" (Quote from World War Z). I really want a wall there. And we can do "patches" but they will connect every time I start a new one.
Cough-not saying it'll take me 2,000 years-cough

Tell me the price of a wooden wall and I'll just upgrade it in patches