Who is Sturm from Black Cross and what is their importance? Black_Cross_(novel) English & Literature Sturm | Black Cross

Sturm is described as a greedy man, who loots the prisoners of the camp for his own personal gain. When Marcus Jansen is selected for execution, his father attempts to purchase his freedom by placing diamonds into Sturm's pocket. Unfortunately, he is caught by Schorner, and Sturm is forced to throw the diamonds into the snow. Sturm retaliates against Schorner by abusing Rachel every chance he gets.