Don Rickles was 30 in Run Silent, Run Deep when he played the character 'Quartermaster 1st Class Ruby'.
That was over 65 years ago in 1958.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
In 2017 he died aged 90, starring in 53 films in his career, 52 of those after Run Silent, Run Deep was first released. If he were alive today he would be 97.
In Run Silent, Run Deep, I think Don Rickles looks: