deepeeka late roman helmet burgh castleThis steel replica is made after an original from Burgh Castle, Norfolk, England from the 3th 4th century AD. The later Roman helmet types weren? t based on Celtic designs anymore, but presumably on the helmets from the Persian Empire, which was emerging in that period. Around the 2nd century AD the cavalry had become an essential part of the Roman army, although it remained a vulnerable unit, one fifth of the army consisted of cavalry. The cheek