What was Montgomery Clift's last and fourth Oscar nomination for Best Supporting Actor?

In his one 12-minute cameo scene in "Judgment at Nuremberg" (1961), Montgomery Clift (1920 – July 1966) played a developmentally disabled German baker who had been a victim of the Nazi sterilisation program. He was testifying at the Nuremberg trials. Clift truly wanted to perform in the movie; he waived his acting fee entirely and accepted the supporting part for minimum compensation.

Clift's anguished performance in "Judgment at Nuremberg" earned him his last and fourth Academy Award nomination for Best Supporting Actor. His performance was often thought to be due to his own nervous breakdown or his own ineptitude at times as an actor. It was nevertheless said that Clift however actually deliberately and consciously performed his own rewritten dialogue as opposed to any confused improvisation.