The episode reveals that Slim Sherman was present at Wounded Knee and testified against Barrington .
In the storyline , Barrington escapes while facing a court martial at Fort Laramie for his subsequent role in the Wounded Knee Massacre in South Dakota in 1890 .
The episode reveals that Slim Sherman was present at Wounded Knee Massacre   and testified against Barrington .
In the storyline , Barrington escapes while facing a court martial at Fort Laramie for his subsequent role in the Wounded Knee Massacre in South Dakota in 1890 .