10 New Archaeological Clues About Roman Warfare-- Part 2: Of Military Camps and Head-Hunting

5.  There were Roman military camps outside the Empire were along the northern frontier along the Rhine River.  These were fortified camps to protect against Germanic tribes.

4.  Roman head-hunting.  A pile of heads was discovered in the 1980s in London.  They were probably those of executed criminals or gladiator trophies.

--DaCootHead