The following from the book, "The United States Marines-A History," by Edwin Howard Simmons, Naval Institute Press,1974, 3dEdition. page 100....
"The Germans made their own sober assessment and begrudgingly allowed that the marines, with more experience, might be considered to be of storm-trooper quality. The marines earnestly told each other that the Heinies were calling them 'Teufelhunden,' or 'Devildogs,' but there is no evidence of this in German records."
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