Rio Grande

In the movie "Rio Grande" (1950), directed by John Ford, a cavalry unit led by Lieutenant Colonel Kirby Yorke (played by John Wayne) is faced with challenges from Apache Indians on the Texas-Mexico border. Yorke's son, Trooper Jeff Yorke (played by Claude Jarman Jr.), joins the unit, leading to personal and military conflicts. The story centers around the struggle to protect the frontier while dealing with family dynamics and loyalty.