When Burt Kennedy came on board, he wanted Henry Fonda, Martin Balsam, Ernest Borgnine or Martin Landau or Karl Malden for the part of Gen. Miles. Malden looked for $250,000 plus $1,500 a day expenses. A much cheaper John Huston got the part.
In his autobiography "Hollywood Trail Boss", Burt Kennedy states that Dino De Laurentiis offered him a Rolls-Royce if he would do an uncredited script rewrite.
This was originally intended as a starring vehicle for Anthony Quinn.
Body count: 95.
Italian censorship visa # 57060 delivered on 15 October 1970.