S1E49 : The Dalton Soldiers

A US Colonel's daughter Kate -passed off for his wife- goes missing in Indian territory. Since nobody volunteers for a rescue mission, his friend President Grant allows him to recruit long-term prisoners - the Daltons have nothing to lose. Kate meanwhile had whipped the chief -ignorant of feminism's dangers- who consented to emasculate his tribe, but the 'rescue' mission goes on. The madness gets ever worse, Luke makes no difference.