The surname 'Kellogg' is used for two characters in the film - the colonel and his daughter Martha. It is also the surname of Mark Kellogg, a newspaper reporter who rode with Custer's troops. He was killed at the Battle of the Little Big Horn.
The saddle on Capt. Benson's horse is an early "plantation saddle." Officers, especially on the frontier, would often substitute personal equipment for military equipment based on taste and affordability.
Many of the film's supporting players went on to regular roles in television series: Barbara Hale (Martha Kellogg) as Della Street on Perry Mason (1957), Frank Faylen (Kruger) as Herbert T. Gillis on The Many Loves of Dobie Gillis (1959), and Denver Pyle (Dixon) as Uncle Jesse on Os Gatões (1979). Frank Wilcox (Major Reno) played a pivotal role in early episodes of A Família Buscapé (1962) as John Brewster, the oilman who bought Jed's land and launched the Clampetts from the backwoods into Beverly Hills.
The flag lowered at the end of the movie has 35 stars rather than 37, which was the approved flag for 1876. The US has never retired a flag design, therefore a flag with 35 stars would not be unusual for a frontier post in 1876.
Filmed in Mexico.