GWR #75 has a dual role, also appearing as N de M engine #903 in the movie. All railroad scenes were filmed east of Indio, California along the iron-ore-hauling Eagle Mountain Railroad.
To sum up, a wealthy Texas millionaire, J.W. Grant (played by Ralph Bellamy), hires four men to rescue his wife, kidnapped by a Mexican revolutionary. The four “professionals” eventually track down the head bandito Jesus Raza (Jack Palance) at his hideout, but things are not all as they seem.
Come along and enjoy the train scenes with some of Hollywood’s biggest stars of the mid-1960’s.
Lee Marvin blasts away from the cab (fireman’s side) of N de M #903. The recoil on that weapon must have been tremendous.