Conversation so far:
Did Stephen Ambrose make to be on Television?
Did Stephen E. Ambrose make it into the filming industry?
He served as the historical consultant for the movie Saving Private Ryan.
What timeline did Stephen E. Ambrose make it into the film industry?
What other activities did Stephen E. Ambrose get involved in?
He was involved in an HBO mini-series, Band of Brothers, for which was an executive producer.

Question: What was he most famous for?
Self-contained rewrite: What was Stephen E. Ambrose most famous for?