This TV (2.2 in Portland) is running Final Approach. Sci-Fi, but close to a war movie. They're kind-of running something like Memorial Day. Antenna TV (32.2) seems to be trying as well. Otherwise, you have cable.
TC Guide Channel has something. Charlie Wilsons War, and all you have to do is put up with the scrolling TV listings. AMC also has some options, but History Channel? Pawn Stars.