'The War Wagon' will never be considered one of John Wayne's great Westerns like 'Rio Bravo', 'The Searchers', or 'Red River', but it is a an enjoyable Western with fine performances and great rapport between Kirk Douglas and John Wayne. The action sequences are well done, the humor dry as the desert it takes place in, and the caper story line rather refreshing for a John Wayne film.
The problem? When the picture ends it leaves you feeling empty. The characters are not particularly interesting (save for Douglas) and the villain is your standard cattle baron murderous jerk. The war wagon itself is an interesting prop and well used, but never really becomes the menacing character it should've been. I enjoyed the movie as a fan of John Wayne and Westerns in general, yet I doubt most of his fans will find this film particularly impressive when compared to many of his other Westerns directed by Hawks and Ford. That isn't to say you should avoid seeing 'The War Wagon', but you should temper your expectations for what is really just an empty Saturday-afternoon adventure. You'll like it while you're watching it and then forget it as soon as the credits roll.