I have vivid memories of Latin class in school. Mostly, it was turbid drudgery because there are few good reasons for a sane teenager to learn a dead language. Still, I have to admit that the Romans did a fairly good job of Shock and Awe several thousand years before the term was co-opted by modern mechanized armies.
Lorica Segmentata (segmented armor) became quite common in the Roman Army in the first century A.D. For me, it typifies the look of a Roman Legionnaire, although chain mail shirts were probably more common among the proletariat foot soldiers.
Windlass Steelcrafts produces a reproduction of classic Lorica in 18 gauge steel. It weighs a jaunty 17 lbs 6 oz, perfect for a quick march down the nearest road to quell local uprisings and fight off naked savages. Available for $439.99 (Canadian) from Reliks Inc., who report it's faithfully "copied from a type of Lorica found in Newstead, Scotland that dates from the second century A.D. This armor is quite flexible and allows plenty of freedom of movement."