In a unconstrained environment where some or all of the captives have not been identified as military by their captors how might the chain of command be established and run?

Select a figurehead as SRO.

Select a figurehead SRO

select a figured head as SRO

In the United States case, in the event that a emergency occurs that would require military rule, a military officer would probably be appointed at the state or federal level. If there is an...

No, it is impossible to know all of the organisms on earth.