We're talking about the relative efficiency of Bitcoin vs. conventional finance in an energy or other cost per transaction sense. I'm asking whether some amount of military spending should be counted in the cost of maintaining a fiat monetary system.

If people were using Bitcoin as currency directly its value would remain equal to whatever people were willing to trade for it. Obviously if all people were willing to trade it for was USD it would become worthless, but that's not the point in this thread.

Bitcoin has other problems as a currency but that's not the topic of discussion here. Some other cryptocurrencies try to solve these, such as it being too deflationary or lacking functionality.