The characteristic ancient weapon is the spear, and the reason is economic as much as tactical: a spearhead uses little metal, and reach is the decisive quality in close-order fighting. Swords are secondary weapons nearly everywhere, drawn when the formation breaks up.
Rome is the significant exception, and its combination is deliberate. The pilum, a heavy javelin with a long iron shank, was thrown at close range; it punched through shields and its shank bent, so it could not be thrown back and fouled the shield it struck. The legionary then closed with the gladius, a short thrusting sword suited to fighting in the press at arm's length.
Missile weapons were more important than the narrative sources suggest, because narratives concentrate on the decisive close fighting. The composite bow, the sling — whose lead bullets sometimes carry inscribed insults — and the javelin appear throughout, and slingers from Rhodes and the Balearics were specialists in demand.
What the evidence supports
The pilum was designed to disable shields.
Described in the sources and consistent with excavated examples: a long soft-iron shank that bends on impact.
Inscribed sling bullets survive in numbers.
Lead bullets carrying unit names, commanders' names and taunts are known from sites including Perugia; they are direct evidence of the soldier's voice.
The sarissa is attested archaeologically.
Butt-spikes, points and connecting sleeves consistent with a very long two-handed pike have been excavated in Macedonia.
Archaeology
Weapon finds are abundant: dedications at Greek sanctuaries, river deposits, battlefield scatters such as Kalkriese, and the arms from Vergina and from Egyptian tombs.
Primary sources
Polybius, Histories 6.22-23, 18.28-32
Roman equipment described in detail and compared with Macedonian.
Vitruvius, On Architecture 10
Military equipment and machines by an engineer.
Battles
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.
53 BCE
Carrhae
A Roman army was destroyed in open desert by Parthian horse archers and cataphracts, in the clearest ancient demonstration that heavy infantry has no answer to mobile missile cavalry.
9 CE
The Teutoburg Forest
Three legions were destroyed in a running ambush over several days, and the Roman frontier settled on the Rhine rather than the Elbe.
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.