Be the first to find all eighteen errors (and we're talking logical, not grammatical or spelling you cheaters!) in Carl Milsted's "The Need to be Anarchists." Here's a few to get you started:
(1) Even if one agrees that the proper punishment for a thief is to pay double, it does not follow that "theft is morally acceptable if all victims are paid back double." (Try changing the crime to murder if you're not sure.)
(2) Now, suppose the majority assesses a tax on everyone to spread the burden of supporting the new defense system. This is theft of the minority. However, suppose that the economies of scale are such that this tax is less than half of what people would have had to pay for defense on their own. Now we have theft with adequate compensation.
Putting aside the problem about "adequate compensation," this overlooks the existence of pacifists in the community. It also makes the strange assumption that the Pentagon is a cost saver. I think I could defend myself from terrorism for a lot less than (Pentagon budget) / (# of US taxpayers).
(3) "We can apply this logic to other government services where the economies of scale are so compelling, such as for country roads."
Even if we ignore the problem about theft and compensation, and that economies of scale don't necessarily lead to cheap gov't provision, there is still the problem that the market could provide the service in question. National defense is a classic public good so one could argue the market wouldn't work. But country roads? C'mon.