See also – https://www.youtube.com/watch?v=6cN-xEcHFt8 –
Ritchie Boys From Wikipedia – The Ritchie Boys were the US special military intelligence officers and enlisted men of World War II who were trained at Camp Ritchie in Maryland. Many of them were German-speaking immigrants to the United States, often Jews who fled Nazi persecution. They were primarily utilized for interrogation of prisoners on the front lines and counter-intelligence in Europe because of their knowledge of the German language and culture.