The Development of Small Shield Use in Roman and Greek Combat

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 redirected 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 and Geometric Precursors

Before the hoplite revolution, warriors in the Aegean used large, figure-eight or tower shields made from wicker and hide stretched over a wooden frame. These were cumbersome but offered protection for chariot crews and mounted aristocrats. 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. By the Geometric period (900–700 BCE), Greek vase painters consistently depicted warriors carrying round shields with a distinctive central notch or cutout—the so-called "Dipylon shield" style.

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 transition from the large tower shield to the smaller round shield reflected a broader shift in warfare: the decline of aristocratic dueling and the rise of massed infantry formations. Near Eastern influences, particularly from Assyrian and Phoenician mercenaries, likely accelerated this adoption of compact, versatile shield designs.

The Greek aspis (plural: aspides) is often incorrectly called a hoplon by modern writers, but ancient sources consistently use aspis for the standard hoplite shield. The aspis was a convex, round shield typically 90–100 cm in diameter and weighing 6–8 kg. Its construction was layered: a core of poplar or willow wood was covered with a thin 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—a technique known as sphyrelaton—and attached with bronze rivets. Some shields were decorated with painted blazons, such as the Gorgon head, tripods, or city-state emblems (e.g., the lambda of Sparta).

Wood core: lightweight but resilient, often poplar, willow, or plane tree.
Bronze covering: 0.5–1 mm thick, providing rigidity and deflecting blows.
Leather lining: cushioned the forearm and improved grip, often made from calfskin.
Grip system: porpax and antilabe allowed for dynamic use in phalanx, distributing the weight across the arm.

Modern reconstructions at institutions like the University of Liverpool 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 facing. The shields were expensive—costing roughly one to two drachmas, equal to several days' wages for a skilled laborer—and were often passed down as family heirlooms.

Grip System and Ergonomics

The porpax and antilabe system was a sophisticated ergonomic solution. The forearm slipped through the porpax up to the elbow, and the hand grasped the antilabe near the rim. This arrangement allowed the hoplite to carry the heavy shield without constantly gripping it tightly, reducing fatigue. It also allowed the shield to rest solidly on the shoulder when at rest. In combat, the concave shape meant the shield could be braced against the left shoulder, transferring the force of impact from the arm to the entire body—essential for the shoving match (othismos) that decided phalanx battles.

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—just under a meter in diameter—meant that the right side of the formation was inherently vulnerable, as the right hand held the spear and had no shield. Consequently, the best troops were typically stationed on the right flank.

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 in flight (rhipsaspis)—was a deep dishonor, since it meant the man to his left was exposed. This social pressure reinforced cohesion.

In the thick of battle, the hoplite used his shield not just to block but to shove. The othismos was the culminating phase of a hoplite battle, where both lines pushed against each other, shields pressed against shields, until one side broke. The aspis's concave shape and heavy weight made it an effective tool for this brutal contest, concentrating the mass of the soldier and his comrades behind a curved bronze wall.

Owning an aspis was a marker of status. In Athens, the hoplite class was defined by the ability to afford full panoply (shield, helmet, cuirass, greaves, spear, and sword). The shield was often the most expensive piece of equipment. Soldiers frequently dedicated their shields at sanctuaries like Olympia or Delphi after a campaign, inscribing them with their names. The shame of losing a shield in battle was so profound that the Athenian legal term rhipsaspis (shield-thrower) carried severe penalties, including loss of citizenship rights. In Sparta, the rhetorical question handed to a soldier going to war—"return with this shield or on it"—underscored the absolute expectation of holding the line.

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, 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 typically had a single central grip (umbo-style) and a metal boss (umbo) to deflect blows and strike opponents.

Evolution from Clipeus to Parma

Roman military equipment evolved under heavy Greek and Etruscan influence. Early Roman soldiers used the clipeus, a round shield nearly identical to the Greek aspis. However, after the Samnite Wars and the Pyrrhic War (280–275 BCE), the Romans adopted the scutum, a large rectangular shield, for heavy infantry. The parma survived as the shield of lighter troops. This dual system—large shields for the heavy infantry of the hastati and principes, small shields for skirmishers and cavalry—reflected Rome's pragmatic adaptation of Hellenistic equipment to their own tactical needs.

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 in diameter, to be manageable on horseback and to avoid interfering with the reins.

Plywood construction: Roman carpenters used advanced plywood techniques to create lightweight, durable shields that resisted splitting.
Leather or felt covering: protected the wood from moisture and absorbed some shock from missile impacts.
Central boss (umbo): provided a striking surface and protected the hand grip; it could be used to punch an opponent.
Single hand grip: contrasted with the Greek porpax system; it allowed quick changes of direction and was easier to stow when not in use.

Tactical Functions in the Roman Army

The parma was standard for velites, the skirmishers who opened battles by harassing enemy lines with javelins (hastae velitares). Its small size allowed the velites to run and dodge freely, covering their torso while leaving legs and head exposed (they wore a simple helmet and sometimes a small chest protector). In the manipular formation, velites operated in open order ahead of the main line, then retreated through the gaps between the maniples of hastati and principes.

The parma also saw extensive use among Roman cavalry (equites). The smaller, lighter shield did not fatigue the arm during prolonged mounted combat and allowed the rider to control his horse effectively. The central boss and lightweight design were well-suited to the hit-and-run tactics of early Roman cavalry. Later, during the Imperial era, the parma was largely replaced by the oval scutum for auxiliaries, but it remained in use for specific roles: standard-bearers (signiferi) often carried a small round parma for ceremonial and combat use, and it continued as a gladiatorial shield type (parmula) for the thraex class.

Comparative Analysis: Aspis Versus 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 the 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—Greek focus on the collective shove versus Roman emphasis on combined arms and flexibility.

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

Different Combat Philosophies

The aspis was optimized for the othismos—the collective push. Its concave bowl and heavy weight allowed the phalanx to advance as a single, interlocking mass. The parma, conversely, was built for the pila and gladius style of the Roman skirmisher, who needed to throw javelins, dodge counter-missiles, and quickly close for sword work. The aspis was rarely used offensively as a striking weapon, whereas the Roman umbo (shield boss) was designed for punching and unbalancing foes.

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 early medieval round 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. These troops, armed with sword and buckler, proved highly effective in the close-quarters fighting of the Italian Wars.

The Late Roman and Byzantine Transition

As the Roman army evolved into the late Roman and Byzantine periods, the large rectangular scutum gradually gave way to oval and round shields. The clipeus returned to prominence, and the parma's design principles influenced the development of the Byzantine thyreos and skoutarion. These shields remained central to infantry and cavalry tactics for centuries, maintaining the balance between protection and mobility first explored by the Greeks and Romans.

The Medieval Buckler and Viking Shield

The Viking round shield, with its central grip and relatively light construction, shares many design features with the Roman parma. By the High Middle Ages, the buckler had become the standard companion to the arming sword. Fencing manuals from the 13th century onward, such as the I.33 manuscript, detail sophisticated techniques for using the buckler—techniques that would have been familiar to a Roman veles or a Greek peltast.

Archaeological and Experimental Studies

Modern experiments by the Society for Ancient Military History have reconstructed aspis and parma shields to test their combat effectiveness. A 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 by the Roman Military Research Society 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 reflection of the lasting ingenuity of classical military engineering. The trade-offs between coverage, weight, and mobility that these ancient soldiers faced are still at the heart of protective equipment design in the modern era.

For further reading, see History Today – The Greek Shield and World History Encyclopedia – Parma.