Sorry if my post is in the wrong place or it's not relevant.
I think bitcoin will loss it's value if their is a time of Chaos like world wars in which the battle will be nuke vs nuke and we all knew that nuclear weapon is capable to wipe out everything including bitcoin. During the war it is impossible to use the bitcoin because of internet is shutdown, establishments will be destroyed and communication will be cut off by these bitcoin will be possibly zero value in which fiat and gold will be the most important like during word war I and II.
On the contrary i think bitcoin will rather gain more value during a world war or something like that because a lot of people will not be able to move funds around and there will be the demand of virtual currencies which cannot be stolen or double spent like bitcoin even though electricity and other factors could be a problem but if you manage to get into the city centers i bet people will prefer to save their assets in bitcoins.
I'm curious if you understand what a world war actually means
It means an instant breakdown of Internet or any other means of communication beyond field radio sets or whatever the military use. In fact, they will be the first to bring down any means of communication between people (say, cell phones or wireless networks) unless nuclear strikes would do that before them. So I can't really fathom how there can be any demand for virtual currencies if such events are going happen. Ammo will be your primary currency then and likely gold coins. And in case of a real full-fledged world war, your only desire would be to survive, Bitcoin will be the last thing you would think of and care about if it should occur for real