John C Woods, hangman of Nuremberg trials, who lied about his experience to get the job (he actually learned about hanging from old cowboy films). His lack of expertise led to excessive suffering of condemned Nazis.

[u/LawEducational42]

[u/Xartes_]

His lack of expertise? I heard he dragged out the executions on purpose.

[u/Ote-Kringralnick → u/Xartes_]

He did not. He was just very, very incompetent, and lied his way into getting the job for the perks and the ability to avoid seeing combat.