The Hundred Years’ War was a prolonged struggle between the kingdoms of England and France over dynastic claims, territorial possessions and political authority. Lasting from 1337 to 1453, it transformed the balance of power in Western Europe.

What began with competing claims to the French crown developed into a succession of wars, truces and shifting alliances. English victories brought extensive territorial gains, but the French monarchy gradually recovered, ultimately reversing most of England’s continental conquests.

Understanding the Hundred Years’ War means looking beyond individual battles to the dynastic rivalries, changing territorial boundaries and political transformations that shaped the conflict over more than a century.

What Was the Hundred Years’ War?

The Hundred Years’ War was not one continuous campaign. It was a series of conflicts between England and France, interrupted by truces and periods of reduced fighting, that stretched from 1337 to 1453.

The struggle passed through distinct phases. English armies achieved major victories and gained extensive territories in France. Yet military success did not guarantee lasting political control. French rulers gradually rebuilt their authority, challenged English gains and recovered much of the territory lost during the war.

The conflict also involved more than two rival kingdoms. Dynastic relationships, powerful nobles, shifting alliances and competing political interests influenced its course. Control of territory mattered not only for military advantage but also for taxation, lordship and the authority of the crown.

The name Hundred Years’ War is therefore a convenient label for a connected but changing series of struggles. Its significance lies in how the conflict evolved over time—and how that evolution reshaped the political relationship between England and France.

Why Did England and France Go to War?

The Hundred Years’ War grew out of a long-running struggle over royal succession, territorial control and the authority of two powerful monarchies. The dispute over the French crown brought these tensions together, but it was not the only cause of the conflict.

A Disputed French Succession

In 1328, King Charles IV of France died without a surviving son. The French crown passed to his cousin, Philip VI, the first king of the Valois dynasty.

Edward III of England, whose mother Isabella was the daughter of King Philip IV of France, also had a claim through the royal family. However, the French political establishment rejected his claim through the female line and accepted Philip VI as king.

The dispute created a lasting source of tension. Edward could challenge the legitimacy of the Valois succession, while the French monarchy had strong reasons to defend its authority over the kingdom.

The Problem of English Lands in France

The English king was not simply a foreign monarch seeking territory across the Channel. He also held lands in France, particularly the duchy of Aquitaine in the south-west.

These possessions created a difficult political relationship. As duke of Aquitaine, Edward III owed obligations to the French king, even though he was himself an independent king of England. Disagreements over the extent of French royal authority, the rights of the English crown and control of the duchy repeatedly strained relations.

Aquitaine also mattered economically. Its trade, especially in wine, connected the region to England and gave both monarchies strong reasons to defend their interests there.

Rivalries Beyond the Two Kingdoms

The tensions extended beyond the French succession and Aquitaine. France supported Scotland, England’s northern rival, while English and French interests also competed in the Low Countries, where the wool trade was important to the production of cloth.

These connections drew other rulers, nobles and trading interests into the wider rivalry. Alliances could strengthen a monarch’s position, but they also widened the political stakes of the dispute.

From Tension to War

The immediate crisis came in 1337, when Philip VI confiscated Aquitaine from Edward III, citing the English king’s failure to meet his feudal obligations. The decision turned a prolonged dispute over authority and territory into open war.

In 1340, Edward formally asserted his claim to the French throne. The dynastic dispute now became an explicit part of the struggle, although English war aims continued to shift between territorial gains, political leverage and the pursuit of the crown itself.

The conflict that followed was therefore not caused by a single grievance. It emerged from the collision of competing dynastic claims, overlapping territorial rights and the ambitions of two monarchies unwilling to accept the limits imposed by the other.

Where Was the Hundred Years’ War Fought?

The Hundred Years’ War was fought primarily in France and the surrounding regions of Western Europe, but its strategic geography extended beyond the battlefield. English possessions in France, the English Channel, trade routes and alliances with neighbouring powers all influenced the course of the conflict.

England and France: Two Crowns, One Continental Struggle

England was the political base of the English monarchy, but the English king also held territories across the Channel. These continental possessions made the relationship between the two kingdoms more complicated than a straightforward war between foreign states.

The French crown sought to strengthen its authority over the kingdom, including territories held by the English king. England, in turn, sought to defend its possessions and preserve its influence in France. The result was a struggle in which military campaigns and disputes over political authority were closely connected.

Aquitaine and South-Western France

Aquitaine was one of the most important territories in the conflict. Located in south-western France, it was held by the English crown under a complicated feudal relationship with the French king.

The region mattered for its economic resources and connections to the wine trade, as well as for its strategic position. Control of Aquitaine repeatedly brought the two monarchies into conflict over the rights and obligations of the English king as a vassal of the French crown.

Northern France and the Road to Paris

Northern France became a major theatre of war because of its proximity to the English Channel, its political importance and its routes towards Paris. English campaigns repeatedly struck into this region, while control of towns, fortifications and surrounding countryside shaped the ability of each side to sustain military operations.

The area around Paris also carried political significance. Holding territory near the French capital could weaken royal authority, while the defence or recovery of the region helped French rulers re-establish their position.

The Channel and the Wider European Network

The English Channel connected the English kingdom to its continental possessions, allowing armies, supplies and communications to move between the two. Control of sea routes could therefore influence the success of campaigns on land.

The conflict also intersected with rivalries elsewhere in Europe. The English relationship with Flanders and the French alliance with Scotland influenced the wider strategic environment. These connections meant that the war was shaped not only by the territories directly contested in France but also by the relationships between neighbouring powers.

Why Geography Mattered

The war’s geography changed as each side gained or lost territory. English victories created periods of extensive territorial control, while French recovery gradually reduced English possessions on the continent.

The key to understanding the conflict is therefore not simply where battles took place, but how control of regions, routes and political centres affected the ability of each monarchy to wage war and maintain authority.

How Did the Territorial Balance Change?

The Hundred Years’ War repeatedly changed the political map of France. English victories brought major territorial gains, but these gains proved difficult to maintain. French rulers gradually recovered lost lands, rebuilt royal authority and weakened England’s position on the continent.

The six maps below trace this changing balance, from the outbreak of war in 1337 to the effective end of the conflict in 1453.

1337 — The War Begins

At the outbreak of war, the English crown held lands in south-western France, particularly in the region of Gascony. These possessions were held within a complicated feudal relationship with the French monarchy.

The English king’s continental lands provided a foothold in France, but they did not amount to control of the kingdom. The conflict began against a background of overlapping claims to territory and authority.

1360 — English Gains at Their Height

Following a series of major English victories, the Treaty of Brétigny in 1360 agreed to extensive territorial concessions to Edward III. These included important lands in south-western France and territories elsewhere in the kingdom.

The settlement marked the high point of English territorial advantage in the first major phase of the war. However, the treaty did not create a lasting political settlement, and fighting resumed later in the century.

1380 — French Recovery

Under Charles V and commanders such as Bertrand du Guesclin, French forces gradually recovered much of the territory conceded to England. Rather than relying solely on major pitched battles, they placed pressure on English garrisons and isolated strongholds.

By 1380, English continental possessions had been greatly reduced. Calais and lands around Bordeaux and Bayonne remained important English-held areas, while French royal authority had recovered much of the kingdom.

1415 — England Returns to the Offensive

Henry V’s invasion of France in 1415 renewed the English challenge. The capture of Harfleur and the victory at Agincourt strengthened his position and opened a new phase of conquest.

However, the territorial situation in 1415 should not be confused with the much wider English-backed position that emerged later. English military success still had to be converted into lasting control, alliances and political recognition.

1429 — A Turning Point in French Recovery

By 1429, England and its Burgundian allies held extensive territories in northern France, while the French crown under Charles VII retained support in other parts of the kingdom.

The lifting of the siege of Orléans and Charles VII’s coronation at Reims strengthened the French cause. These developments did not immediately end English power, but they helped shift the political and military momentum towards the French monarchy.

1453 — The End of English Rule in Most of France

By 1453, French forces had recovered almost all the continental territories held by the English crown. The French victory at Castillon and the loss of Bordeaux ended the effective English presence in south-western France.

Calais remained under English control, but England had lost its extensive territorial position within France. The final outcome was a major shift in the balance of power between the two kingdoms.

How Did the War Unfold over 116 Years?

Who Shaped the Conflict?

The Rival Crowns: Edward III and the Valois Kings

Edward III of England made the French succession dispute central to his struggle with the French monarchy. His claim came through his mother, Isabella of France, while Philip VI had been accepted as king through the male line of the French royal family.

Their rivalry established the dynastic foundation of the war. Yet the conflict was never only about who should wear the French crown. Both monarchies also sought to control territory, defend their rights and strengthen their authority.

The struggle continued under successive rulers. English kings sought to preserve or expand their continental possessions, while French kings worked to recover territory and establish firmer control over their kingdom.

Charles V: Rebuilding French Royal Power

Charles V, king of France from 1364 to 1380, helped reverse the territorial gains England had made earlier in the war. Rather than relying entirely on spectacular battlefield victories, his government placed sustained pressure on English-held strongholds and sought to recover territory gradually.

His reign demonstrated that military success depended on more than winning individual battles. The ability to organise campaigns, maintain authority and turn military gains into lasting territorial recovery was equally important.

Charles VI and Henry V: A Divided France Meets a Renewed English Offensive

During the reign of Charles VI, divisions among powerful French nobles weakened the monarchy. Rivalries between the Burgundian and Armagnac factions developed into a damaging internal conflict.

Henry V of England took advantage of this fractured political landscape. His military campaigns and the Treaty of Troyes in 1420 created a serious challenge to the Valois succession. Under the treaty, Henry was recognised as heir and regent to Charles VI and married Charles’s daughter, Catherine of Valois.

The settlement offered England a political route to the French crown, but it did not secure universal acceptance. The future Charles VII rejected the arrangement and continued to contest the English claim.

Henry V’s death in 1422, followed by Charles VI’s death shortly afterwards, left the conflict with rival royal claims and competing governments. England continued to advance the claim of Henry VI, while Charles VII sought to establish his authority across France.

Burgundy: The Power That Changed the Balance

The dukes of Burgundy were among the most important political actors in the later war. Their lands, resources and influence made them powerful in their own right, and their rivalry with the Valois court shaped the wider conflict.

After Duke John the Fearless was assassinated in 1419, his successor, Philip the Good, strengthened Burgundy’s alliance with England. This relationship supported the political settlement established at Troyes.

But the alliance was not permanent. In 1435, Philip the Good reconciled with Charles VII through the Treaty of Arras. The change weakened England’s diplomatic position and helped the French king pursue the recovery of territories held by English forces.

Burgundy’s role shows why the war cannot be understood simply as England against France. Rivalries within France and the choices of powerful neighbouring rulers could be just as important as the ambitions of the two crowns.

Charles VII and Joan of Arc: Restoring the French Cause

Charles VII faced the challenge of defending a contested claim while rebuilding royal authority. His position strengthened after the events of 1429, when Joan of Arc helped raise the siege of Orléans and accompanied the movement that led to his coronation at Reims.

Joan became an important figure in the French cause because her presence helped strengthen confidence in Charles’s legitimacy at a critical moment. Her contribution was significant, but the eventual French recovery also depended on political alliances, military leadership, resources and the monarchy’s capacity to sustain the war.

Charles VII’s later success rested on turning this renewed momentum into lasting gains. By the end of the conflict, the French crown had recovered almost all the continental territories previously held by England.

Why These Leaders Mattered

The changing fortunes of the Hundred Years’ War reflected the interaction of dynastic claims, royal authority, noble rivalries and alliances. English victories could create opportunities for territorial expansion, but lasting success required political support and the ability to maintain control.

France’s eventual recovery was not the achievement of one ruler or one military hero. It emerged from changing leadership, the reconciliation with Burgundy and the growing ability of the French monarchy to turn military gains into a more secure territorial settlement.

How Did Warfare and Royal Power Change?

The Hundred Years’ War began in a world where rulers relied heavily on noble retinues, feudal obligations and locally raised forces. By its later stages, paid military service, more organised royal forces and increasingly powerful artillery had changed how the conflict was fought.

These developments did not happen overnight, and older methods continued alongside new ones. The important change was the growing ability of monarchies to organise, finance and sustain military campaigns.

From Feudal Service to Paid Armies

At the beginning of the war, kings depended on a mixture of noble military obligations, household troops, local levies and paid soldiers. These forces could be effective, but raising and retaining them for long campaigns was difficult.

England increasingly relied on contracts between the crown and military captains to recruit men-at-arms and archers for overseas service. This made it easier to assemble forces for specific campaigns and helped establish military service as a more sustained professional occupation.

France also employed paid troops, but its military system continued to rely on a range of traditional obligations and regional forces. During the later war, Charles VII strengthened royal control over the army through reforms that created more permanent, organised forces.

The Longbow, Armour and the Changing Battlefield

English and Welsh archers armed with longbows became an important element of English military success. Their concentrated volleys could disrupt formations, threaten horses and make attacks across exposed ground extremely costly.

However, the longbow was not a weapon that guaranteed victory. Its effectiveness depended on trained archers, suitable positions, coordination with other troops and the circumstances of each engagement. Armoured men-at-arms, infantry and crossbowmen remained important throughout the conflict.

Protective equipment evolved as well. Plate armour offered greater protection than earlier forms of armour, while soldiers on foot used a range of spears, axes and other weapons. The balance between mounted warriors, infantry and missile troops varied according to the campaign and terrain.

The lesson was not that one weapon replaced another. Successful armies combined different kinds of troops and used them in ways suited to the situation.

Sieges, Fortifications and Gunpowder Artillery

Much of the Hundred Years’ War consisted of sieges, raids and efforts to secure towns, castles and supply routes rather than a continuous succession of major battles.

Strong fortifications could protect a region and force an enemy to commit time and resources to a siege. Attackers used blockades, mining, siege engines and, increasingly, gunpowder artillery to overcome these defences.

Artillery gradually became more important as the war progressed. By the final phase, French forces were using it effectively in campaigns to recover English-held strongholds. Its importance lay not simply in its destructive power, but in the ability to support systematic territorial recovery.

Financing War and Strengthening the Crown

Sustained warfare required money for soldiers, equipment, supplies and fortifications. Both monarchies therefore faced pressure to develop more reliable ways of raising revenue and managing military expenditure.

In England, the need to finance war helped make parliamentary agreement to taxation an important political issue. The crown needed resources, while representatives of the realm sought influence over how taxes were granted and spent.

In France, wartime financial demands and later reforms strengthened the monarchy’s ability to maintain military forces. Under Charles VII, more regular taxation helped support the establishment of permanent royal military companies in 1445.

These developments were not identical in the two kingdoms. England’s relationship between taxation and Parliament differed from the French crown’s growing fiscal and military authority. Nevertheless, the war encouraged both monarchies to develop more organised ways of mobilising resources.

Why These Changes Mattered

The Hundred Years’ War increasingly rewarded the ability to sustain military pressure over time. A victory in battle could win territory, but holding it required garrisons, supplies, money and political cooperation.

England demonstrated how professional recruitment, trained archers and careful campaigning could produce extraordinary victories. France ultimately combined military adaptation with stronger royal resources, improved organisation and more effective use of artillery to recover much of its lost territory.

The war therefore changed more than the balance between two kingdoms. It exposed the limits of relying on temporary forces and fragmented authority, while encouraging new ways of organising armies and financing royal power.

Why Did France Ultimately Recover?

England won remarkable victories during the Hundred Years’ War and, at several points, controlled extensive territories in France. Yet these gains did not produce a lasting settlement. By 1453, the French monarchy had recovered almost all the continental lands held by England.

France’s recovery was not inevitable, nor was it the achievement of a single battle or leader. It resulted from the interaction of political reconciliation, stronger royal resources, military adaptation and the growing difficulty England faced in sustaining its continental position.

France Rebuilt Its Political Position

The French monarchy survived periods of severe weakness, including internal divisions and competing claims to the crown. The events of 1429 strengthened Charles VII’s legitimacy, while his government gradually established firmer authority over the kingdom.

This political recovery mattered because reclaiming territory required more than defeating an enemy in the field. The crown needed cooperation from local authorities, reliable resources and the ability to maintain control after a military campaign had ended.

Burgundy’s Reconciliation Changed the Balance

One of the decisive diplomatic changes came in 1435, when Philip the Good, Duke of Burgundy, reconciled with Charles VII through the Treaty of Arras.

Burgundy had been a major English ally, and its relationship with England strengthened the English-backed claim to the French crown. The reconciliation weakened that alliance and improved Charles VII’s position.

This change illustrates a central feature of the war: military strength depended partly on political relationships. France gained an advantage not simply by fighting more effectively, but by reducing the number and influence of its opponents.

France Developed the Means to Sustain War

The French recovery also depended on the crown’s increasing ability to finance, organise and maintain military forces. Reforms under Charles VII supported more permanent royal companies, while improved artillery helped French armies reduce fortified positions.

These changes allowed France to apply sustained pressure rather than depend entirely on occasional major victories. The recovery of Normandy in 1449–1450 and the final campaign in south-western France demonstrated the growing effectiveness of this approach.

Military capability and political authority reinforced each other: better-organised forces helped the monarchy recover territory, while more reliable revenue and administration helped sustain those forces.

England Could No Longer Maintain Its Continental Position

England’s early victories had created extensive overseas commitments. Holding territory across the Channel required continuing expenditure, garrisons, supplies and political support at home.

As French forces recovered ground and Burgundy moved away from its alliance with England, the English position became increasingly difficult to sustain. The loss of Normandy was followed by the final struggle for Gascony. The French victory at Castillon in 1453 and the fall of Bordeaux ended England’s extensive continental rule.

English military success had not disappeared overnight. Rather, the political and strategic conditions that had once supported expansion had changed, while France had become better equipped to turn its advantages into lasting control.

Why the Outcome Matters

The Hundred Years’ War did not end because England lost every battle or because France possessed one decisive advantage from the beginning. England had repeatedly demonstrated its ability to win battles and secure territory. France ultimately proved more successful at rebuilding royal authority, gaining diplomatic support and sustaining the long process of reconquest.

By 1453, Calais remained under English control, but almost all the English crown’s other continental possessions had been lost. The balance of power had shifted decisively, leaving the French monarchy in a stronger position to govern its kingdom.

What Did the War Change in the Long Term?

France: A Stronger Monarchy and Greater Territorial Unity

By 1453, the French crown had recovered almost all the continental territories held by England. The victory strengthened the position of Charles VII and reduced the ability of rival powers to challenge royal authority across much of the kingdom.

The war also encouraged changes in taxation, administration and military organisation. More regular revenue helped the monarchy maintain forces and exercise authority over a wider territory. These developments strengthened the foundations of royal government, although regional differences and local powers did not disappear.

France emerged from the conflict in a stronger political position, with a monarchy better equipped to defend and consolidate its authority.

England: Political and Financial Strain

The loss of Normandy and Gascony ended England’s extensive continental possessions, leaving Calais as its principal remaining foothold in France. The failure to preserve the gains made by earlier kings damaged the standing of the monarchy and intensified disagreement over the conduct and cost of the war.

Financing prolonged campaigns placed pressure on royal revenue and made parliamentary taxation increasingly important. The need to obtain funds encouraged debate over how money was raised and spent, helping Parliament strengthen its role in the political life of the kingdom.

The military failure did not by itself cause England’s later dynastic crisis. However, the loss of the French war and dissatisfaction with Henry VI’s rule contributed to the political tensions that preceded the Wars of the Roses, which began in 1455.

War, Taxation and the Growth of Government

Both kingdoms had to find ways to pay for soldiers, supplies, fortifications and repeated campaigns. Their responses helped reshape royal government.

In England, the crown’s dependence on parliamentary grants encouraged negotiation over taxation and expenditure. In France, the monarchy developed more direct and regular means of raising revenue, strengthening its capacity to sustain military forces.

These were not simple or uninterrupted transformations. Royal authority remained contested in both kingdoms, and the political consequences differed according to their institutions and circumstances. Nevertheless, the war increased the importance of taxation, administration and the ability to mobilise resources on a sustained basis.

Military Change and the Experience of War

The conflict demonstrated the importance of organised forces, effective logistics, artillery and the ability to maintain pressure on fortified positions. These developments contributed to changing approaches to warfare, although older military practices continued alongside new methods.

The war also brought severe disruption to communities across France. Raids, sieges, mercenary activity and repeated campaigns damaged settlements and agriculture, while taxation placed additional burdens on populations already affected by insecurity.

The consequences therefore extended far beyond the courts and armies. For many people, the war meant lost livelihoods, damaged property and prolonged uncertainty.

Identity, Memory and Historical Legacy

The long conflict helped rulers and political leaders present the war as a struggle involving the wider realm, not merely a dispute among dynasties. Claims to the crown, royal propaganda, religious arguments and prominent figures such as Joan of Arc became important to how the conflict was understood.

However, medieval ideas of political identity were not identical to modern nationalism. Loyalties remained layered, shaped by locality, lordship, religion, dynasty and allegiance to the crown. The development of stronger English and French identities was gradual and differed across social groups.

The war’s legacy was therefore both political and cultural. It helped shape the ways people understood royal authority, political community and the rivalry between England and France, while leaving later generations to reinterpret its heroes, defeats and victories.

The Long-Term Outcome

The Hundred Years’ War did not create modern England and France in their later forms. It did, however, alter their relationship and reinforce different patterns of political development.

France recovered its continental territories and strengthened royal government. England lost its extensive holdings in France, faced financial and political strain, and entered a period of dynastic conflict. Across both kingdoms, the demands of prolonged warfare helped make taxation, military organisation and royal administration increasingly important to the exercise of power.

Explore the Hundred Years’ War Through History Weaver

The Hundred Years’ War was more than a struggle between two crowns. It was a changing conflict shaped by ambitious rulers, battlefield victories, political rivalries and shifting alliances.

History Weaver brings these events to life through an eight-phase documentary series, following the conflict from its origins to the final loss of England’s continental possessions.

Explore the campaigns, meet the people who shaped the war, and discover how individual events influenced the wider struggle between England and France.

Go Deeper Through History Research

The Hundred Years’ War is documented through chronicles, royal records, treaties and other historical evidence. These sources help historians reconstruct events, but they also raise questions about reliability, perspective and interpretation.

History Research explores how historical evidence is examined and what it can—and cannot—tell us about the past.

Explore relevant research to look beyond the broad historical narrative and consider how our understanding of the Hundred Years’ War is shaped by the surviving evidence.