In which TV series did the actor who played Gant in the film Firefox first achieve success ?
Firefox (novel):  The book was subject to a 1982 film adaptation produced and directed by Clint Eastwood who also played the role of Gant in the film. Clint Eastwood:  After achieving success in the Western TV series "Rawhide", he rose to international fame with his role as the Man with No Name in Sergio Leone's "Dollars" Trilogy of Spaghetti Westerns during the 1960s, and as antihero cop Harry Callahan in the five "Dirty Harry" films throughout the 1970s and 1980s.
Rawhide