Dylan McDermott was 24 in Hamburger Hill when he played the character 'Sgt. Adam Frantz'.
That was over 37 years ago in 1987.
This was his first recorded movie acting credit (although may not technically be his first actual acting role).
Today he is 62, and has starred in 44 movies in total, 43 of those since Hamburger Hill was released.
In Hamburger Hill, I think Dylan McDermott looks: