Recently finished rewatching the best television ever filmed in the U.S. - The Wire. The lessons for COIN, organizational dysfunction, the futility of applying tactics without strategy, etc. are myriad and well done.

Also bought the Criterion version of Ride with the Devil, an unappreciated Ang Lee film about Confederate guerrillas in Missouri during the Civil War. This one has it all for COIN study - the process of radicalization, the effects of civilian deaths, the relative importance of personal ties and group identity in a civil war context, the empowerment of radical elements over moderates - all in a well done story.