That was over 20 years ago in 2002.
Today he is 66, and has starred in 113 movies in total, 63 since Hart's War was released.
In Hart's War, I think Bruce Willis looks:
Hart's War scores 6 out of 10 on The Movie Database.
Bruce Willis' first acting role was as 'Extra (uncredited)' in Ein Guru kommt, released in 1980 when he was 25.