The image of medieval warfare is dominated by knights in shining armour and kings charging into battle. Yet hidden beneath the surface are the stories of women who defied convention and commanded armies in their own right. While the era’s chronicles often focused on male rulers, a closer look reveals that female military leadership was far more common than the official records suggest. From heiresses defending castles to queens rallying troops during civil wars, women found ways to wield power when the survival of their families and territories depended on it. Among these figures, Queen Matilda of England – also known as Empress Matilda or Maud – stands out as one of the most determined and controversial commanders of the twelfth century. Her struggle to claim the English throne during the brutal conflict known as The Anarchy not only reshaped the monarchy but also challenged the very definition of female authority on the battlefield.

Queen Matilda: A Heir Denied, a Leader Forged

Born in 1102, Matilda was the daughter of King Henry I of England and Matilda of Scotland. Her father, the youngest son of William the Conqueror, saw her as a crucial dynastic tool from the start. At the age of just eight, she was sent to Germany to marry the future Holy Roman Emperor Henry V, becoming Empress Consort and spending much of her youth immersed in the complex politics of the imperial court. When the emperor died without an heir in 1125, Matilda returned to her father’s kingdom a widow, carrying with her the prestige of the imperial title but also the burden of being a childless woman in a world that measured queens by their sons. Henry I, whose only legitimate son, William Adelin, had perished in the White Ship disaster of 1120, now made a momentous decision: he forced his barons to swear fealty to Matilda as his rightful heir, first in 1127 and again in 1131. It was a radical move that sought to bypass the entrenched expectation that a woman could not govern in her own name, let alone lead a kingdom at war.

To secure the succession, Henry arranged a second marriage for Matilda, this time to Geoffrey Plantagenet, Count of Anjou. The match was politically astute – Anjou was a powerful if turbulent neighbour – but Matilda and Geoffrey were mismatched in temperament, and the union initially produced more friction than genuine partnership. Nevertheless, it gave Matilda the military backing she would later rely on, and in time she bore three sons, the eldest of whom would become the great Henry II. When Henry I died in 1135, however, the oaths sworn to her evaporated overnight. Her cousin, Stephen of Blois, a grandson of William the Conqueror through his mother Adela, seized the moment. He rushed to England, secured the treasury and had himself crowned king with the support of the Church and many of the magnates. The stage was set for a long and destructive civil war – a period that would test Matilda’s leadership to its limits. For a deeper understanding of her upbringing and political manoeuvring, the HistoryExtra profile of Empress Matilda provides an excellent overview of her early years and the tangled succession crisis.

The Anarchy: England’s Protracted Civil War

The conflict that erupted after Stephen’s coronation, known to historians as The Anarchy, convulsed England for nearly two decades. It was not a tidy war of pitched battles between noble houses but a chaotic and often brutal series of sieges, raids and shifting allegiances that ravaged the countryside and left communities exposed to the depredations of local lords. Chroniclers of the time, such as the author of the Gesta Stephani, painted a grim picture of a land “full of rapine,” where castles became the launchpads for terror. For Matilda, the struggle was both a personal quest for justice and a broader fight to uphold the principle that a monarch’s word – and a designated heiress – should not be so easily cast aside. She bided her time in Normandy, gradually building her network of allies, until 1139, when she launched her invasion of England with the critical support of her half-brother, Robert of Gloucester, one of the most capable military commanders of the age.

Two Matildas, Two Armies

One of the most striking aspects of the Anarchy was that the conflict pitted not just Matilda against Stephen, but also, effectively, Matilda against another Matilda. Stephen’s queen, Matilda of Boulogne, was a formidable figure in her own right. A descendant of the old Anglo-Saxon royal line through her mother, she brought wealth, connections and a fierce determination to her husband’s cause. When Stephen was captured at the Battle of Lincoln in 1141, it was Queen Matilda who refused to abandon the fight. She raised fresh troops, rallied the Londoners who had grown wary of the Empress, and skilfully negotiated with the barons to keep Stephen’s claim alive. Her military leadership, though often exercised through deputies, was indispensable. Women were thus commanding forces on both sides of England’s civil war, a reminder that female authority in the heat of conflict was not a curiosity but a strategic necessity. The two Matildas, one fighting for her own crown and the other for her husband’s, demonstrated that when male leadership faltered, women stepped directly into the breach.

Lincoln and the Ill-Fated March to London

Matilda’s forces achieved their greatest triumph in February 1141 at the Battle of Lincoln. Robert of Gloucester directed the tactical assault, but Matilda’s presence in the field was more than symbolic. Having witnessed how her gender was used to undermine her claim, she understood the power of visibility. When Stephen’s army was routed and the king himself taken prisoner, it seemed that the war would end swiftly in her favour. She rode towards Winchester, where the clergy received her, and then pressed on to London to claim the crown. Yet the city, which thrived on its royal privileges, turned against her. Contemporary sources accuse her of arrogance and a refusal to listen to counsel, and it is likely that she underestimated the deep-rooted resistance to a female sovereign. Her attempt to be crowned as queen regnant collapsed in a storm of street fighting, forcing her to retreat. The moment of victory slipped away, and Stephen’s queen, Matilda of Boulogne, seized the initiative, besieging the Empress’s supporters and eventually capturing Robert of Gloucester. The exchange of Stephen for Robert later that year reset the conflict, proving that the anarchy would drag on.

Empress Matilda’s Command on the Battlefield

Despite the setback at London, Matilda remained an active military leader for years, directing sieges and fortifying her strongholds across the West Country and the Thames Valley. Her approach was pragmatic, relying heavily on the network of castles that functioned as both defensive perches and instruments of territorial control. At Oxford in 1142, she became the target of one of Stephen’s most determined offensives. The king laid siege to the castle with the intention of capturing her and ending the war once and for all. Trapped inside a city cut off by snow and ice, Matilda made a decision that has since become the stuff of legend.

The Escape from Oxford: A Masterstroke of Winter Warfare

With supplies running low and no relief force in sight, Matilda conceived a daring breakout. According to several chronicles, she waited until the dead of winter, when the Thames was frozen and the surrounding marshlands blanketed in white. Dressed entirely in white cloaks for camouflage, she slipped out of Oxford Castle with a small escort of trusted knights and walked across the frozen river, right under the noses of Stephen’s encamped army. The party then made a gruelling trek to Abingdon, from where she rode to safety at Wallingford. The escape was not merely an act of personal survival; it was a propaganda coup. The woman who dared to claim a throne had outwitted an entire army, reinforcing the image of a leader who could not be easily dismissed. Military historians point to the escape as a textbook example of using weather and terrain to evade a numerically superior foe, and it cemented Matilda’s reputation among her supporters as a resilient and resourceful commander.

Beyond the Empress: A Spectrum of Female Warlords

Matilda’s career did not unfold in isolation. Throughout the Middle Ages, women across Europe and beyond took up arms, often when the absence or death of male relatives created a power vacuum. While each woman’s experience was unique, their stories collectively dismantle the myth that the female sex was inherently incapable of military leadership. From the early Anglo-Saxon period through the late medieval era, commanders like Æthelflæd, Lady of the Mercians, Joan of Arc and Nicholaa de la Haye demonstrated that leadership in war depended on determination, tactical sense and the ability to inspire, not on physical strength alone.

Æthelflæd, Lady of the Mercians: Builder and Battlefield Leader

Long before Matilda’s civil war, Æthelflæd ruled the kingdom of Mercia in the early tenth century, first alongside her husband and then in her own name after his death. She was no mere figurehead. In a time of relentless Viking raids, she designed and directed the construction of a network of fortified towns, or burhs, across central England, many of which became the foundations of urban centres that still exist today. More than a passive defence, these burhs allowed her to launch counter-offensives deep into Viking-held territory. English Heritage’s account of her life details how she personally led Mercian forces on campaigns, capturing Derby and turning the tide against the Norse armies. Æthelflæd’s rule lasted only a few years after her husband’s death, but her impact was so profound that later chroniclers called her “the Lady of the Mercians” with a respect rarely accorded to a woman. She proved that a queen could be the architect of a kingdom’s survival, not just its ornament.

Joan of Arc: The Maid Who Turned the Tide

Perhaps no female military figure of the medieval era is more widely recognised than Joan of Arc. A peasant girl from Domrémy, she claimed divine guidance that instructed her to save France from English domination during the Hundred Years’ War. By 1429, she had convinced the dauphin Charles VII to let her lead an army to relieve the besieged city of Orléans. Dressed in armour and carrying a banner rather than a sword, Joan rode at the head of the troops and, through sheer force of belief, energised a demoralised French force. The victory at Orléans shattered the English siege and proved a turning point in the war. As the Britannica biography of Joan of Arc records, her presence on the battlefield was understood by friend and foe alike as a miraculous sign, but her practical skills in directing artillery and coordinating assaults were also recognised by seasoned commanders. Captured by the Burgundians and tried for heresy, she was burned at the stake in 1431, only to be canonised as a saint centuries later. Joan’s story, though exceptional in its religious framing, highlights a recurring truth: a woman who could galvanise an army and outthink her opponents on the field of battle could reshape history overnight.

Nicholaa de la Haye: The Castle Defender

A less celebrated but equally instructive example comes from thirteenth-century England. Nicholaa de la Haye inherited her father’s land in Lincolnshire and, through two marriages, became the constable of Lincoln Castle – a position she held in her own right. In 1191, during the captivity of King Richard I, she successfully defended the castle against a siege led by Richard’s brother John. But her most remarkable feat occurred decades later, in 1217, when she was well into her sixties. England was in the grip of the First Barons’ War, and Prince Louis of France had invaded. Nicholaa was placed in command of Lincoln Castle, a vital strategic stronghold, and held it against repeated assaults until a relief force arrived. The Women’s History Encyclopedia’s entry on Nicholaa de la Haye notes that she was formally appointed sheriff of Lincolnshire by King John, making her the first recorded female sheriff in English history. Her command was not a brief emergency but a sustained exercise of military and political authority that spanned years. Nicholaa’s life reminds us that female leadership in war did not require a crown; sometimes it was the determination of a castellan that kept a kingdom from breaking apart.

The Constraints of Gender in a Male-Dominated Arena

For all their achievements, women in medieval warfare had to navigate a thicket of social and legal expectations that men did not. The very idea of a woman giving orders on the battlefield unsettled the established order, and chroniclers frequently struggled to reconcile female authority with their own preconceptions. Writers such as William of Malmesbury and Henry of Huntingdon often described Matilda’s assertiveness in terms that hinted at an improper crossing of gender lines: she was called arrogant, masculine or heartless. When a queen acted like a king, the language used to describe her often betrayed an unease that said more about the chroniclers than the commander. This sexist undercurrent was not just a matter of tone; it had real consequences. Matilda’s inability to secure the crown in 1141 was in large part due to the refusal of the Londoners and the churchmen to accept female sovereignty, an attitude that persisted even after she had proved her competence.

Nevertheless, medieval society did accept women leading in emergencies. The doctrine of necessary defence allowed noblewomen to bear arms and command troops when their husbands were dead, absent or captured. This was seen as a temporary extension of their duty to protect family and property, not a permanent political right. Matilda of Boulogne’s vigorous campaigning on behalf of Stephen fell comfortably within this acceptable framework, while Empress Matilda, who sought the throne for herself, shattered those conventions. It is no coincidence that the women who appear most frequently in military records were those whose positions were defined by inheritance or appointment to a specific castle or earldom, like Nicholaa de la Haye. They operated in a twilight world between the private duty of a wife and the public power of a lord, and their achievements were often recorded only because they were so exceptional as to demand explanation. The fact that their stories survive at all is testament both to their own actions and to the grudging respect they forced from their contemporaries.

Rediscovering the Legacy: What Modern Scholarship Reveals

For centuries, the military history of the Middle Ages was written primarily by Victorian and early twentieth-century scholars who placed male commanders at the centre and treated women leaders as anomalies. Today, a new generation of historians is uncovering the breadth and depth of female involvement in warfare. Works such as Helen Castor’s She-Wolves: The Women Who Ruled England Before Elizabeth and Dan Jones’s The Anarchy have brought Empress Matilda’s story to a wide audience, while military historians increasingly analyse castle defence strategies by paying attention to the female constables who implemented them. Archaeological evidence, too, has begun to challenge old assumptions: analysis of burial sites in some regions has shown that women were sometimes interred with weapons, indicating that their participation in combat was not entirely unheard of in certain cultures and periods.

This reappraisal matters not only for the historical record but for our broader understanding of gender and power. When we place Matilda, Æthelflæd, Joan and Nicholaa alongside the men who dominated the chronicles, the narrative of medieval warfare becomes richer and more accurate. It becomes a story of human enterprise in which courage, strategic thinking and resilience are not the exclusive properties of one sex. The rehabilitation of these figures also provides a powerful corrective to the tired notion that women’s contributions to history were always indirect and supportive. They led armies, built fortresses, endured sieges and shaped the political map of their world through sheer force of will. Their example continues to challenge, inspire and demand a more complete telling of the past.

A More Complete Picture of Medieval Warfare

The story of women in medieval warfare cannot be reduced to a handful of extraordinary individuals. It is a sprawling, intricate narrative that stretches from the shield-maiden legends of the Viking age to the ladies who defended manor houses during the Wars of the Roses. But by focusing on figures like Empress Matilda, we see patterns that repeat across time and place. In periods of political fragmentation and crisis, the rules that normally kept women from positions of command grew porous. Ambitious, intelligent and determined women stepped through those openings, and once in power, they fought as fiercely as any man to hold it. Their legacies are carved in castle walls, in treaties and in the memories of the people they led. By giving them their due, we not only honour their achievements but also equip ourselves with a more truthful understanding of the medieval world – a world in which the clash of swords knew no gender, even if the right to rule often did.