Sean Connery was 31 in The Longest Day when he played the character 'Pvt. Flanagan'.
That was over 62 years ago in 1962.
In 2020 he died aged 90, starring in 109 films in his career, 92 of those after The Longest Day was first released. If he were alive today he would be 93.
In The Longest Day, I think Sean Connery looks: