Conversation so far:
What was the series about?
The series originally focused on the efforts of a real-life squad of Prohibition agents employed by the United States Department of the Treasury and led by Eliot Ness (Stack).
Who were some of the other actors that starred in the series?
Neville Brand as Al Capone.
Were there others as well?
an array of gangsters and villains of the 1930s, including Ma Barker, Dutch Schultz, Bugs Moran, Vincent "Mad Dog" Coll, Legs Diamond, Lucky Luciano, and in one episode, Nazi agents.
Did The series win any awards?
CANNOTANSWER.

Question: What was particularly noteable about the series?
Self-contained rewrite: What was particularly noteable about The Untouchables series?