Originally Posted by Hammerfel

I know adult SE doesn't talk in the movie, aside from that grunt after beating SS. I was asking about flash back young SE in the Arashikage compound.

I don't recall any mention of an oath of silence in the Marvel comics. All I knew about was the injury from the helicopter crash that also messed up his face. I think an oath of silence for any military operator is idiocy, and I winced when I heard it mentioned in the movie.