Rio Grande is a 1950 Western directed by John Ford starring John Wayne, Maureen O'Hara, and many members of the so-called "John Ford Stock Company", including Victor McLaglen, Ben Johnson, and Harry Carey Jr.. It is the final installment of John Ford's unofficial "Cavalry Trilogy", following 1948's Fort Apache and 1949's She Wore a Yellow Ribbon
The first two films were made with RKO, while Rio Grande was made with Republic Pictures. John Ford, John Wayne and Maureen O'Hara were originally supposed to have made The Quiet Man first, but Republic, one of the smaller studios, wasn't certain about the prospects for The Quiet Man and insisted that Rio Grande be made first to cover any potential losses. (Ironically, The Quiet Man would go on to make more money than Rio Grande.) With Republic, the budget for Rio Grande was roughly half of what was spent on Fort Apache, and indeed some of the more manpower intensive scenes in Rio Grande were recycled from Fort Apache.
This would be the first of five films that paired John Wayne and Maureen O'Hara. John Wayne's son Patrick Wayne makes his film debut, but not as LTC Kirby Yorke's son, but as an uncredited boy. (Although many might assume that LTC Kirby Yorke is just an older version of CPT Kirby York from Fort Apache, this is not the case. Victor McLaglen and Ben Johnson play characters who had similar names in She Wore a Yellow Ribbon, but they are obviously different characters as well.)
The following weapons are used in Rio Grande:
Springfield Model 1873 Cavalry Carbine
The main weapon of the cavalry is the Springfield Model 1873 Cavalry Carbine.
Colt Single Action Army
Cavalry troopers carry Colt Single Action Army revolvers as sidearms. There appears to be a mix of both Quick-Draw and Cavalry models.
Winchester Model 1892
Many of the Apaches are armed with Winchester Model 1892 repeating rifles. Troopers Boone, Tyree and Yorke are armed with them when they sneak into the Indian village.
Winchester Model 1873
Winchester Model 1876
Double Barreled Shotgun
One of the deputy marshals (uncredited) is armed with a Double Barreled Shotgun.
A small brass cannon is seen at the fort. It is fired once during the Apache sneak attack.