In the climactic scene when James Cagney enters the death chambers he breaks down. So the question for the last 70 years, was it just acting on his part (no pun intended) or was Rocky actually terrified.
I have to say the look on James Cagney’s face before he enters the chamber…one of the greatest moments in cinema.
I’d say he was scared, but if not for Father Jerry he would have played the tough guy to the end. I think in the sequence leading up to the execution Cagney shows us some fear beneath the bravado. But Rocky’s holding on to his tough-guy image because, like he says, it was the only thing he had left, and as Father Jerry said, it would take real courage for him to sacrifice that.