Armour is a compromise, and different armies struck it differently. The archaic Greek bronze bell cuirass gave excellent protection at high cost and weight. It was largely displaced by a lighter composite corselet, usually called the linothorax, which appears constantly in art and survives nowhere — its construction, whether glued linen laminate or leather or a composite, is genuinely unresolved.
Mail was a Celtic invention adopted by Rome and used for centuries: flexible, effective against cuts, labour-intensive to make. The segmented plate armour that dominates the popular image of the legionary, lorica segmentata, was in use for a relatively limited period of the Principate and coexisted with mail rather than replacing it.
Persian infantry favoured lighter protection with the bow; Egyptian New Kingdom armour included scale, of which examples survive. Across all of these, armour was expensive, and who wore it is a statement about the society raising the army.
What the evidence supports
Segmented plate armour was not the standard legionary equipment across Roman history.
Its archaeological distribution is concentrated in the first and second centuries CE, and mail is in continuous use before, during and after.
The construction of the linothorax is unresolved.
Ubiquitous in Greek art, absent from the archaeological record because organic materials do not survive. Reconstructions are experimental rather than evidential.
Mail was adopted from Celtic practice.
The earliest examples are from Celtic contexts and the ancient tradition credits the invention accordingly.
Archaeology
Bronze cuirasses from Greek sanctuaries, mail from military sites, and the Corbridge hoard, which preserved segmented armour fittings well enough to reconstruct how the type was assembled.
Primary sources
Polybius, Histories 6.23
Roman body armour by property class.
Roman state monument, Trajan's Column reliefs
Pictorial evidence for Roman armour, with the caution that state monuments idealise and simplify.
Battles
490 BCE
Marathon
An Athenian and Plataean hoplite force defeated a Persian expedition on the coast of Attica, and the Greek world learned that a Persian army could be beaten.
216 BCE
Cannae
Hannibal destroyed the largest army Rome had ever put in the field by allowing his own centre to be pushed back, and produced the model double envelopment of European military history.
How to read the evidence labels
- Evidence level: Documented
- Supported by a named primary text or by excavated material evidence.
- Evidence level: Probable
- Supported by strong inference that most specialists accept.
- Evidence level: Disputed
- Substantial specialist disagreement exists; competing readings are stated.
- Evidence level: Literary
- Belongs to poetic or mythological construction rather than to history.
- Evidence level: Mythological
- Belongs to shared religious or mythic tradition rather than to any single text.
- Evidence level: Unknown
- The available evidence is insufficient to decide.
These labels describe the status of the evidence, not our confidence in a conclusion. A claim marked Literary is not a claim we doubt; it is a claim about what kind of thing a poem is.