Platte River Gauntlet by Jon Sharpe

Fargo is going straight through hell…

When a frontier army fort is ordered to pull up stakes and move, Fargo’s scouting skills may not be enough to protect the massive military maneuver. Because even though there are wanton women, blind-drunk buffalo hunters, and highfalutin’ officers on the march, the real danger is the pack of dangerous predators waiting for the Trailsman to let his guard down...