Lee Marvin in “Sergeant Ryker“ (1968)

Sgt. Ryker (Lee Marvin) is an American soldier accused of defecting to Communist China and then returning to his unit as a spy during the Korean War. He is charged with treason, court-martialed and prosecuted by Capt. David Young (Bradford Dillman), and convicted, and sentenced to hang. Ryker’s wife, Ann (Vera Miles), insists that her husband received an inadequate defense. She believes his story that he had been given a confidential top secret mission to pose as a defector and gather intelligence, assigned by a superior officer who has since died, and can no longer vouch for him, and no record of it was found. Capt. Young believes Ryker is guilty, but now having doubts about what he did, thinks Ryker received an inadequate legal defense. He persuades the commanding General (Lloyd Nolan) to give Ryker a new trial. The General reluctantly agrees, but insists this time Young must be Ryker’s defense counsel. Ryker has already resigned himself to his fate, and has to be persuaded to go along