Wachmänner Nikolay Yegorovich Shalayev (Микола Єгорович Шалаєв) was an SS auxiliary guard (Hilfswilligen) trained at Trawniki and serving at the Treblinka extermination camp in occupied Poland during the Holocaust. He was one of two Ukrainian guards (along with Ivan Marchenko) in charge of the motor that produced the exhaust f...