How large was the Polish army during the era of the first Piasts? Which units formed its core fighting force, and how were they armed? How did Polish princes and kings prepare for military campaigns? These questions shed light on a formative period in the development of Poland’s military structures and traditions.
From the Ducal Retinue to a Knightly Order
The primary military force in the early Piast period was the ducal drużyna – a professional warrior retinue. Its combat effectiveness was highly praised by Ibrahim ibn Yaqub, a Jewish merchant who visited Slavic lands in the second half of the 10th century.
The drużyna maintained constant battle readiness. The state – that is, the prince and his officials – provided each warrior with pay, weapons, horses, equipment, provisions, and lodging. The ruler also cared for the families of his retainers. As a result, a unique bond formed between the prince and his men, one that translated directly into military discipline and the unwavering loyalty of the troops.
The funds needed to maintain the drużyna came from tribute levied on the population, the spoils and contributions of war, and the revenues of the prince’s own estates. Yet even before the first half of the 11th century, the drużyna began to decline. This was due to the political and economic crises that engulfed the Polish state: the invasion of Bretislaus, rebellions by the magnates, peasant uprisings, and pagan revolts.
During his long and difficult reign, Casimir the Restorer – forced to flee the country in 1037 and ruling again, within reduced borders, from around 1040 – successfully rebuilt the foundations of Poland’s military organization. Unable to equip the former retainers from his impoverished treasury, he granted them land. In exchange for these benefices, they were obliged to appear mounted and properly armed whenever summoned. Thus emerged a system of obligations later known as knightly law.
Weapons and Armor of the 11th-Century Polish Army
This transformation did not mean that the old institution of the drużyna disappeared entirely. Elite household units, operating under the old rules, continued to exist under the authority of the prince and the most powerful dignitaries, such as the archbishop or the wojewoda (palatine). The wojewoda, the highest-ranking palace official of the era, was responsible for managing the new system of military obligations. The state treasury no longer had to maintain warriors who now lived off their landed benefices granted by the ruler.
The offensive weaponry of the Piast army included swords – straight-bladed, slightly tapering weapons designed for cutting – as well as spears used for thrusting in both infantry and cavalry combat. Warriors also wielded axes for overhead blows and bows capable of launching arrows up to 250 meters.
Defensive equipment in the mid-11th century consisted of armor, helmets, and shields. The most widespread form of body protection in Poland at the time was the mail hauberk, an expensive and labor-intensive piece of armor worn mainly by wealthier warriors. Helmets were typically conical, made from four iron plates riveted together. In contrast, the wooden shield was a much cheaper defensive option, used both by mounted warriors and by peasants serving as infantry.
The Structure and Organization of the Early Piast Army
The earliest Polish army was divided into distinct tactical units, as attested by written sources using various Latin terms such as legio, phalanx, acies, cohors, and agmen. The largest of these units was the legion, composed of several formations. A single formation typically numbered between 100 and 300 soldiers.
The army’s organizational structure probably consisted of a mixed decimal and thirties system. The decimal system appears to have applied primarily to the infantry, while the thirties system – better suited to mounted troops – operated within the cavalry.
Under the early Piasts, the army comprised two main branches: cavalry and infantry. Infantry units were generally employed for the assault and defense of strongholds and were also useful in guerrilla-style operations. Cavalry, on the other hand, was used to conduct charges and break enemy formations.
There were also specialized units of archers and slingers. Archers proved especially troublesome to German forces fighting Bolesław the Brave in the early 11th century. The presence of slingers in the Piast army is confirmed by sling stones found in archaeological excavations. When necessary, local populations were mobilized for constructing and repairing strongholds, clearing forests, and building bridges.
Discipline, Training, and Command
Overall command during a military campaign rested with the ruler. In exceptional circumstances, the prince could delegate this authority to a substitute commander – typically a close relative (most often a brother or son) or the wojewoda. Such a deputy could also lead a separate detachment of troops.
In this period, the Polish military displayed a relatively high level of training, combat skill, and discipline. This was maintained through a system of rewards and punishments. Soldiers who distinguished themselves received public praise, were granted prestigious positions, or were allowed a share in the redistribution of war booty.
Punishments included verbal reprimands, flogging, and, in the most serious cases, death. The death penalty was reserved for warriors who fled the battlefield, betrayed the ruler’s interests, or engaged in espionage on behalf of Poland’s enemies.
Tactics of Offensive Warfare
In the early Piast era, offensive warfare typically aimed to acquire plunder – necessary for maintaining the costly drużyna – and captives, who were settled on state lands after victorious campaigns. This increased both the economic and military potential of the realm.
Offensive operations also served to gain control over neighboring peoples or expand territory. Strategic initiative rested with the attacking side, which helped compensate for the logistical challenges of conducting campaigns on hostile ground.
Military action was preceded by a stage of careful planning, during which the ruler established the overall strategic objective. Implementing these plans required achieving the element of surprise – misleading the enemy about the direction of attack or deceiving his intelligence services regarding the timing of the offensive.
The early Piasts do not appear to have used rigid tactical schemes. Instead, commanders adapted to the evolving circumstances on the battlefield. Piast tactics were flexible, requiring considerable skill from both senior leaders and lower-ranking officers.
In pitched battles, the goal was to break enemy formations and inflict maximum casualties, typically through a powerful frontal assault. Other maneuvers aimed at stretching enemy lines or outflanking them. Infantry was placed at the center of the battle array, while cavalry occupied one or both wings. Victory usually depended on cavalry, which attacked the opponent’s flanks and rear. Infantry, meanwhile, bore the brunt of enemy attacks attempting to rupture its ranks.
The Size of the Polish Army in the 10th and 11th Centuries
According to contemporary sources, Mieszko I was able to muster at least 3,000 members of the drużyna. Bolesław the Brave likely commanded an army twice as large, as the Polish state had expanded significantly during his reign, allowing him to recruit additional warriors from newly conquered territories.
By the end of his life, Mieszko II could probably call upon far fewer men, as earlier-acquired lands had slipped from Poland’s control. Kazimierz the Restorer, ruling over an even smaller state – having lost further regions, including Mazovia – likely commanded a still smaller force.
