That’s a great article and worth reading beginning to end. Thanks for posting it.
I disagree with the author that there was no duty for a prisoner to try to escape. It may not have been part of an actual sworn oath, but the duty to continue opposing the enemy was still there. I also disagree with the implication that the Great Escape was some kind of futile gesture. It caused the Germans to devote significant resources to recapturing the escapees.