Watch Rio Grande (1950) online for free full movie and streaming film in English with HD quality. Lt. Col. Kirby Yorke commands a U.S. cavalry troop north of the Rio Grande. Indians have been raiding and then fleeing south of the river into Mexico. Yorke is surprised when he learns that the son he has not seen for 15 years, Jeff, has flunked out of West Point. He’s barely digested the information when his son shows up at the camp as a new cavalry recruit. His personal life gets even more complicated when his wife, Jeff’s mother, Kathleen also shows up at the fort intent on taking her son home. As the situation increasingly deteriorates, the women and children are sent to safety but the wagon train is attacked and all the children taken forcing Yorke and his men to cross into Mexico to get them back.