Worked as assistant in blueprint department, then in art department, RKO-Radio Pictures

Became assistant film editor, then production assistant for David O. Selznick

Worked as a film editor

Served as captain in Air Corps during WWII; directed and edited 45 documentaries and training films

Signed as a director by Columbia; diretorial debut "The Man Who Dared"

Joined MGM

Began working on independent productions; co-founded The Mirisch Company

Directed last film, "The Eagle Has Landed"