THEY WENT INTO BELLEAU WOOD MARINES. THEY CAME BACK DEVIL DOGS. A 47-million-square-foot forest in northern France, Belleau Wood was the site of a World War I battle in June 1918. The U.S. Marines fought with such ferocity that the Germans nicknamed them 'Teufel Hunden' or 'Devil Dogs'. THEY'VE EARNED THEIR OWN MEMORIAL.