You want to talk long term torture? Look
here it's really too bad more people don't know him for what he did for the country. Sadly most just remember him as Ross Perot's running mate.
Here is some info from another page...
This web page is dedicated to Medal of Honor holder Vice Admiral James Bond Stockdale, USN (retired). Admiral Stockdale (then a Commander), was the Commander of Carrier Air Wing 16, on board the carrier USS Oriskany (CVA-34), when he flew on a mission with Attack Squadron 163 on September 9, 1965. On that mission, Commander Stockdale's A-4E Skyhawk, BuNo. 151134, was hit by enemy AAA fire and he was forced to eject from the aircraft over enemy territory. He was captured by the North Vietnamese and imprisoned for 7½ years, during which he suffered hideous torture, horrible abuse, debasement, and starvation. Promoted to the rank of Captain in absentia while a Prisoner of War, Stockdale was released from captivity at war's end in early 1973. Subsequently, he was promoted to the rank of Rear Admiral, and then to Vice Admiral, the rank in which he retired from active duty. In 1992, Admiral Stockdale was a candidate for Vice President of the United States of America.
Medal of Honor Citation:
For conspicous gallantry and intrepidity at the risk of his life above and beyond the call of duty while senior naval officer in the Prisoner of War camps of North Vietnam.
Recognized by his captors as the leader in the Prisoners' of War resistance to interrogation and in their refusal to participate in propaganda exploitation, Rear Admiral Stockdale was singled out for interrogation and attendant torture after he was detected in a covert communications attempt.
Sensing the start of another purge, and aware that his earlier efforts at self disfiguration to dissuade his captors from exploiting him for propaganda purposes had resulted in cruel and agonizing punishment, Rear Admiral Stockdale resolved to make himself a symbol of resistance regardless of personal sacrifice. He deliberately inflicted a near-mortal wound to his person in order to convince his captors of his willingness to give up his life rather than capitulate. He was subsequently discovered and revived by the North Vietnamese who, convinced of his indomitable spirit, abated in their employment of excessive harassment and torture toward all of the Prisoners of War.
By his heroic action, at great peril to himself, he earned the everlasting gratitude of his fellow prisoners and of his country. Rear Admiral Stockdale's valiant leadership and extraordinary courage in a hostile environment sustain and enhance the finest traditions of the U.S. Naval Service.