Best movies that are oscar winners in writing (story and screenplay--based on factual material or material not previously published or produced) category

Actors : Michael Strong, Karl Malden, Stephen Young, George C. Scott,
Directors : Franklin J. Schaffner,

The World War II phase of the career of the controversial American general, George S. Patton.

Actors : Robert Redford, Paul Newman, Robert Shaw, Charles Durning,
Directors : George Roy Hill,

In Chicago in September 1936, a young con man seeking revenge for his murdered partner teams up with a master of the big con to win a fortune from a criminal banker.

Actors : Melvyn Douglas, Robert Redford, Peter Boyle, Don Porter,
Directors : Michael Ritchie,

Bill McKay is a candidate for the U.S. Senate from California. He has no hope of winning, so he is willing to tweak the establishment.

Actors : Richard Dysart, Barnard Hughes, Diana Rigg, George C. Scott,
Directors : Arthur Hiller,

An over-burdened doctor struggles to find meaning in his life while a murderer stalks the halls of his hospital.