According to the Third Geneva Convention itself (the one covering POWs), for a person to qualify as a POW and be accorded the treatment proscribed in said convention, that person must be affiliated (either regular army or militia meaning some sort of uniform) with a "High Contracting Power" (a state that was party to the convention but for argument's sake we'll say any state).

CENTERFORSECURITYPOLICY: Amnesty ignorant again

We just reached that point in terms of our national debt, cumulative budget deficits, contracting employment opportunities and geopolitical power.

FORBES: My Country, Right Or Wrong, My Country!

With Spain's housing bubble burst and the economy contracting, Mariano Rajoy's conservative Popular Party swept to power in a landslide general election win in November 2011.

BBC: Spain revises down its economic forecast