This a John Wayne film like no other. Take it from a huge fan that's seen most of his movies. Although this is not classified as a comedy, the Duke's turns in a sly performance full of great one-liners and facial expressions that had me rolling. Its action adventure in the oil fields and it's very entertaining and fun. Wayne is Cowboy Dan Somers and he competes with oilman Jim Gardner for oil lease rights on Indian land in Oklahoma, as well as for the favors of schoolteacher Cathy Allen. It has a good supporting cast including George "Gabby" Hayes.
You will never see the Duke quite like this in any other role. If you're a fan of the Duke, this film is a must so track down a copy while you can. It was originally titled "In Old Oklahoma" and then reissued as "War of the Wildcats" If we cross our fingers, maybe this will be re-released on DVD as it deserves to be.