Trails of rage

the long version

When Captain Jack Price of the Union Army arrives out West, he finds solid evidence that the vicious and deadly attacks on stagecoach stations between Kansas and Colorado are the work of Confederate soldiers disguised as Indians. If the attacks continue successfully, the Rebels will be able to cut the West in two and stir up enough Indian trouble to keep Union soldiers tied up indefinitely. But, before he can act, he finds himself being attacked by real Indians. A narrow escape to a nearby Union fort seems almost miraculous, until the truth comes to light. For this Union fort has been taken over by Confederates in stolen Union uniforms, and Price is taken captive.