German archaeologists have unearthed "sensational" evidence of a lost Roman camp that formed a vital part of the frontier protecting Rome's empire against the Germanic hordes. Historians believe the camp, once home to an estimated 1,000 legionaries and located on the River Lippe near the town of Olfen, may well have been served as a key base for the Roman General Drusus, who waged a long and bloody war against the tribes that once inhabited what is now western Germany. The find comes 100 years after the discovery of a bronze Roman helmet near Olfen indicated the presence of ancient...