(Image credit: Stichelbaut, B. et al; Published by Cambridge University Press on behalf of Antiquity Publications Ltd. (photograph by Dries Coucke).) Dugout with entrance from the Battle of the Bulge site. Aerial drones equipped with lasers have revealed the secrets of the Battle of the Bulge, the largest and bloodiest battle fought by the U.S. in World War II . The drones revealed 941 traces of the battle, including dugouts and bomb craters, according to a study published Tuesday (Aug. 15) in the journal Antiquity . Officially known as the Ardennes Counteroffensive, the Battle of the Bulge took place between…