
Devil Dog

Devil Dog is a nickname for a U.S. Marine. It is said by US Marines to be based on the use of "Teufelshunde" by German soldiers to describe Marines fighting in World War I. In newer sources it is claimed to be a myth.
The "Devil Dogs" nickname for Marines appeared in newspapers in the United States in April 1918. The "La Crosse Tribune" ran a story about the nickname on April 27, 1918, and other newspapers used the story as early as April 14, 1918. 
Other common nicknames for Marines are "Leatherneck" and "Jarhead".
The amphibious assault ship had the nickname "Devil Dog" due to her being named after the Battle of Belleau Wood.