Last Stand at Saber River (1997) on Netflix

Plot summary

Paul Cable fought for the Confederacy and returns to Texas to find his wife Martha had been told he was killed in action. She resents the years he spent away from her and their children. Cable wants to start again on the ranch he owns in Arizona, so the family, with Clare and Davis, says goodbye to Martha's father James Sanford and heads west. On the road they meet Lorraine Kidston, whose crew runs horses at night and stampedes through the Cable camp; Lorraine learns who Paul is, and that her father Duane, a former Union soldier, has taken over the Cable ranch with his brother Vern, who has no use for Confederates.