This is an excerpt from: Ancient Roman Military Camp Unearthed in Eastern Germany:
Archaeologists have confirmed the presence of a long-lost Roman military camp deep in eastern Germany. The 18-hectare site, found near the town of Hachelbich in Thuringia, would have sheltered a Roman legion of up to 5000 troops. Its location in a broad valley with few impediments suggests it was a stopover on the way to invade territory further east.
“People have been searching for evidence of the Romans in this part of Germany for 200 years,” says team leader Mario Kuessner, an archaeologist working for the state of Thuringia. “It took a long time before we realized what we had, and we wanted to be sure.”
After a stinging defeat in 9 C.E., Rome largely abandoned hope of conquering the fractious German tribes north of the Rhine River. Yet written sources suggest that the Romans occasionally campaigned in Germany, probably to punish German tribes for raids on Roman territory. Until recently, the reports have been largely dismissed as braggadocio. The Hachelbich site, along with a battlefield near Hannover uncovered in 2008, show that the reports had more than a kernel of truth to them—and that the Romans were willing to cross their frontier when it suited their political or military needs.