I’m not convinced the flashbacks improved this intense story about a family, but Spencer Tracy's presence certainly lends it some weight – the kind he often brought to his roles – which helps it distinguish itself from other films. He plays an aging rancher with four sons. Three are from his first marriage and resentful, particularly "Ben" (Richard Widmark); "Joe" (Robert Wagner) is the product of a later relationship and clearly favored. The story unfolds in the late 1800s as traditional methods clash with industrial progress, specifically due to a copper mine that disrupts their lives. His established approaches are out of step with the increasingly legalistic systems coming from elsewhere, leading to a conflict that seems likely to change the "Devereaux" ranch forever. There have been many westerns depicting the end of an era, but few succeed; this one, although occasionally feeling like too much is being said, does manage to work. It gives Tracy the opportunity to portray someone who’s becoming outdated in his own time with a certain sadness. He believes his actions will help his family, but has he actually done so, or just pushed them away? Widmark doesn't deliver his most believable performance, although it’s difficult to fully understand "Ben" until later on; Wagner is adequate and Katy Jurado provides some subtle, though infrequent, moments as an Indian woman whose marriage to the rancher decades earlier created friction within both her family and the wider community. The title implies a more action-packed film than this is, but it still captures something of how ways of life are shifting for an unexpected combination of Native Americans and settlers confronting new, aggressive arrivals who show no regard for those who came before.

Source on TMDB