Sterling Hayden was 46 in Dr. Strangelove or: How I Learned to Stop Worrying and Love the Bomb when he played the character 'Brigadier General Jack D. Ripper'.
That was over 60 years ago in 1964.
In 1986 he died aged 70, starring in 68 films in his career, 27 of those after Dr. Strangelove or: How I Learned to Stop Worrying and Love the Bomb was first released. If he were alive today he would be 108.
In Dr. Strangelove or: How I Learned to Stop Worrying and Love the Bomb, I think Sterling Hayden looks: