Law and Order in Arizona.

At one point General Crook dismisses the idea of Apaches punishing Apaches for crimes, saying: "The authority for punishing crimes rests with the United States government."

Read more: https://www.springfieldspringfield.co.uk/movie_script.php?movie=taza-son-of-cochise

Even though Arizona Territory was formed in 1863 at least a dozen years before the fictional date of Taza, Son of Cochise (1954) in 1875 to 1877 and thus had territorial courts, and had counties with county courts and sheriffs, and had municipalities with town jails and town marshals.

Curiously, General Howard claims that he is the law and order in Arizona in the movie The Last Wagon (1956) with a fictional date of 1873, even though Arizona already had many civil courts and law officers in 1873, and even though the movie itself mentions a territorial reward for a criminal and a town sheriff.

So I guess in the movies martial law must have been declared in 1870s Arizona a lot.