Conversation so far:
When did James Stockdale become a prisoner of war?
On 9 September 1965, Stockdale ejected from his Douglas A-4 Skyhawk. He parachuted into a small village, where he was severely beaten and taken prisoner.
What happened while James Stockdale was a POW?
As the senior Naval officer, he was one of the primary organizers of prisoner resistance.

Question: What happened during those 7.5 years?
Self-contained rewrite: What happened during the 7.5 years James Stockdale was a POW?