When Noah is interviewing Chris for a biography, Noah asks about an Indian siege the Chis participated in. Chris lists the others involved and mentions Bat Masterson. It is the only time in the film series that a real life gunfighter is mentioned. Bat Masterson was a gunfighter who was famous for being the Sherriff of Ford County, Kansas based in Dodge City.
In the final shootout in town, Chris shoots the bandit chief off his horse. The bandit chief is blown backwards off his horse, but Chris is shown on his left hand side, ninety degrees from the way the bandit is blown off his horse.
Noah Forbes wear his gun holster on his left thigh as he is left handed, however after the first attack when they return to the village, his gun holster is on his right thigh.
The movie takes place in Mexico, but throughout the movie, Joshua trees are shown in the background as well as the main scene. Joshua trees are indigenous to the Mohave desert areas of Calif, Nevada and Arizona only, there are none in Mexico.
Marshall Chris Adams: Judge Parker told me once, "The men I hang never killed again. There are plenty I didn't hang, did." Now you tell me he was wrong.