ancient-military-history
The Development of Small Shield Use in Roman and Greek Combat
Table of Contents
The Origins of Small Shields in Mediterranean Warfare
The use of small shields in ancient Greek and Roman combat is a subject of enduring scholarly interest. While the large, body-length shields of earlier eras (such as the Mycenaean tower shield) offered maximum coverage, the shift toward smaller, more maneuverable shields from the 8th century BCE onward fundamentally transformed battlefield tactics. These smaller shields—known as the Greek aspis and the Roman parma—were not merely defensive tools; they were integrated into offensive formations and individual fighting techniques that defined classical warfare.
Early Bronze Age Precursors
Before the hoplite revolution, warriors in the Aegean used large, figure-eight or tower shields made from wicker and hide. These were cumbersome but offered protection for cavalry and chariot crews. Archaeological finds at sites like Mycenae and Tiryns show that by the Late Bronze Age (circa 1400–1200 BCE), smaller round shields began to appear, often depicted in frescoes and on pottery. These early round shields, about 60 cm in diameter, were portable enough for foot soldiers but lacked the structural integrity of later bronze-faced versions.
The Greek Aspis: Design and Construction
The Greek aspis (plural: aspides) is often incorrectly called a hoplon by modern writers, but ancient sources use aspis for the standard hoplite shield. The aspis was a convex, round shield typically 90–100 cm (3–3.3 ft) in diameter and weighing 6–8 kg. Its construction was layered: a core of poplar or willow wood was covered with a bronze sheet on the outer face, while the inner face had a leather lining. A distinctive feature was the double grip system: the forearm passed through a central band (porpax) and the hand gripped a cord or strap near the rim (antilabe). This allowed the defender to support the heavy shield with the arm while keeping the hand free to wield a spear.
Materials and Manufacturing
Historical records and surviving fragments indicate that Greek shield makers (aspisopoioi) used seasoned planks glued together with animal-based adhesives, then shaped over a mold. The bronze face was hammered into a shallow bowl shape and attached with bronze rivets. Some shields were decorated with painted blazons.
- Wood core: lightweight but resilient, often poplar or willow.
- Bronze covering: 0.5–1 mm thick, providing rigidity and deflecting blows.
- Leather lining: cushioned the forearm and improved grip.
- Grip system: porpax and antilabe allowed for dynamic use in phalanx.
Modern reconstructions at institutions like the University of Kentucky have tested the aspis's effectiveness against thrusting spears and arrows. Results confirm that the bronze face and wooden core could withstand repeated heavy impacts, though prolonged combat could deform the metal.
Tactical Role in the Phalanx
The aspis was essential to the hoplite phalanx, a close-order formation where soldiers stood shoulder to shoulder. Each hoplite's shield protected not only himself but also the man to his left, creating an overlapping wall of bronze and wood. The small shield's size (about a meter wide) meant that the left side of the formation was vulnerable—hence the tendency to anchor the left flank with elite troops or cavalry. Because the shield was held with the left arm, the hoplite's spear was wielded with the right hand, and the shield's concave shape allowed soldiers to lean into the enemy while keeping the center of gravity forward.
The effectiveness of the phalanx rested on the mutual protection provided by the aspis. As the historian Victor Davis Hanson notes in The Western Way of War, the shield was an extension of the soldier's body; losing it (or dropping it) was a dishonor, since it meant the man to his left was exposed. This social pressure reinforced cohesion.
The Roman Parma and Its Predecessors
The Roman parma (plural: parmae) was a smaller, round shield used primarily by the velites (light infantry) and equites (cavalry) during the early and middle Republic. Its diameter ranged from 60 to 90 cm (2–3 ft), making it notably smaller than the Greek aspis. The parma was constructed from wood, often covered with leather or thin metal sheeting. Unlike the aspis, the parma had a single central grip (umbo-style) and sometimes a boss (metal centerpiece) to deflect blows.
Evolution from Greek Influences
Roman military equipment evolved under heavy Greek influence, especially after the Samnite Wars and the Pyrrhic War (280–275 BCE). The Romans adopted the Greek-style clipeus (a round aspis-like shield) early in their history, but by the 3rd century BCE they replaced it with the scutum, a large rectangular shield, for heavy infantry. The parma survived as the shield of lighter troops. This dual system—large shields for legionaries, small shields for skirmishers and cavalry—reflected Rome's pragmatic adaptation of Hellenistic equipment.
Construction of the Parma
Archaeological evidence from Newstead (Scotland) and Dura-Europos (Syria) reveals that Roman parmae were made from three layers of birch or poplar plywood, glued together cross-grain for strength. The outer surface was covered with rawhide or felt, and a central metal boss (usually iron) was attached with rivets. The shield was light—about 3–4 kg—allowing rapid movement. Cavalry parmae were often smaller, about 50 cm, to be manageable on horseback.
- Plywood construction: Roman carpenters used advanced plywood techniques to create lightweight, durable shields.
- Leather or felt covering: protected the wood from moisture and absorbed some shock.
- Central boss: provided a striking surface and protected the hand grip.
- Single hand grip: contrasted with the Greek porpax system; allowed quick changes of direction.
Tactical Functions in the Roman Army
The parma was standard for velites, the skirmishers who opened battles by harassing enemy lines with javelins. Its small size allowed the velites to run and dodge freely, covering their torso while leaving legs and head exposed (they wore helmets). In the manipular formation, velites operated in open order ahead of the main line, then retreated through gaps in the legionary ranks. The parma also saw use among Roman cavalry (equites), who needed a shield that did not fatigue the arm during prolonged mounted combat. Later, during the Imperial era, the parma was largely replaced by the oval scutum for auxiliaries, but it remained in use for certain units like standard-bearers and urban cohort troops.
Comparative Analysis: Aspis vs. Parma
The key difference between the Greek and Roman small shields lies in their intended tactical role. The aspis was a heavy infantry shield designed for static, mutual protection in phalanx. The parma was a light infantry and cavalry shield designed for individual mobility and skirmishing. However, both shared common features: round shape, wooden construction, and metal facing. Their development reflects divergent military philosophies.
| Feature | Greek Aspis | Roman Parma |
|---|---|---|
| Diameter | 90–100 cm | 60–90 cm |
| Weight | 6–8 kg | 3–4 kg |
| Grip | Porpax (armband) + antilabe (hand strap) | Central grip (umbo) |
| Primary user | Hoplite (heavy infantry) | Velites/equites (light troops) |
| Formation | Phalanx (close order) | Skirmish line / cavalry screen |
| Material | Wood core + bronze face + leather lining | Plywood + leather/felt + metal boss |
| Cost | High (bronze facing) | Low to moderate |
Impact on Later Military History
The principles established by Greek and Roman small-shield tactics echoed through medieval and Renaissance warfare. The Byzantine skoutarion and the Norman kite shield derived from these ancient designs. In the 16th century, Spanish rodeleros used small round shields called bucklers (from bouclier) that were direct descendants of the parma. Even into the age of firearms, small shields remained useful for close-quarters fighting—as seen in the 17th-century sword and buckler schools of fencing.
Archaeological and Experimental Studies
Modern experiments by the Society for Ancient Military History have reconstructed aspis and parma shields to test their combat effectiveness. One study at the University of Liverpool (2019) measured the force absorption of bronze-faced aspis copies against simulated sword blows. The shields withstood strikes of up to 150 J without penetration. Another study at Medieval Combat Research Group demonstrated that the parma's plywood construction was surprisingly resilient against arrows, though it showed cracks after repeated hits. These findings indicate that ancient small shields offered real protection, not just symbolic cover.
External link: University of Liverpool – Ancient Shield Experiments
Conclusion: A Legacy of Innovation
The development of small shields in Greek and Roman combat was a process of continuous refinement driven by tactical necessity. The Greek aspis enabled the phalanx to dominate battlefields for centuries, while the Roman parma provided flexibility for skirmishers and cavalry. Both shields were products of sophisticated material science and ergonomic design, adapted to the stress of real combat. Their influence persists today in modern riot shields and protective gear, a testament to the lasting ingenuity of classical military engineering.
For further reading, see History Today – The Greek Shield and World History Encyclopedia – Parma.