Did fighting cowboys and outlaws produce important military lessons?
Short answerThe response treats the activity mainly as policing and does not identify a major transferable battlefield lesson.
NotesThe fighting with cowboys and outlaws raised in the question is characterized as policing or, at most, a limited insurgency. The Texas Rangers are invoked as an example of employing people familiar with the same environment to enforce the law. The analogy concerns the operation's scale and purpose, with no major transferable battlefield lesson identified.