Soldier Blue is a 1970 American Revisionist Western movie directed by Ralph Nelson and inspired by events of the 1864 Sand Creek massacre in the Colorado Territory.
The screenplay was written by John Gay based on the novel Arrow in the Sun by Theodore V. Olsen (republished as Soldier Blue after the movie was released). It starred Candice Bergen, Peter Strauss and Donald Pleasence. The title song, written and performed by Buffy Sainte-Marie, was released as a single and became a top ten hit in the UK as well as other countries in Europe and Japan during the summer of 1971.
In September 1970, Dotson Rader of The New York Times, wrote that Soldier Blue "must be numbered among the most significant, the most brutal and liberating, the most honest American films ever made".