“I agree a POW situation becomes a survival situation”
I certainly does not.
Anything anyone does in the military is for national security and for the good of the unit and the mission. Any code of behavior and ethics other than that is for civilians.
I'd leave those judgments to those who've actually been in a POW situation rather than to the arm chair heroes. As long as a POW doesn't endanger others, he should work to survive.
And doing nothing to endanger others is still a very large and difficult responsibility.