The medieval world was rarely peaceful, but few periods rivalled the sheer scale of violence witnessed during the 14th century. Kingdoms fought for crowns, dynasties collapsed, entire regions were ravaged by raiding armies, and civilians increasingly became targets rather than unfortunate bystanders.
It was an age when longbows shattered the reputation of mounted knights, cannon first appeared on European battlefields, mercenary companies terrorised the countryside, and plague weakened societies already exhausted by war. The result was a century that transformed military history as profoundly as it scarred Europe’s political landscape.
As a historian, I sometimes think the fourteenth century deserves less of its romantic reputation. Chivalry certainly existed, but so did burned villages, famine, extortion, and enough political intrigue to make modern Westminster look pleasantly straightforward.
Why the 14th Century Was Different
Earlier medieval wars were often limited campaigns fought by relatively small armies for dynastic advantage. During the 14th century, conflict became longer, broader and increasingly destructive.
Several developments combined to create unprecedented devastation:
- The Hundred Years’ War became a generations-long conflict.
- Civil wars erupted across Europe.
- The Black Death weakened economies and societies.
- Professional soldiers and mercenary companies became increasingly common.
- Siege warfare intensified.
- Early gunpowder weapons entered European warfare.
- Civilian populations suffered on an unprecedented scale.
Rather than isolated campaigns, Europe experienced continuous military pressure for decades.
Timeline of the Century
| Year | Event | Historical Importance |
|---|---|---|
| 1302 | Battle of the Golden Spurs | Infantry defeats elite cavalry |
| 1314 | Battle of Bannockburn | Scottish independence strengthened |
| 1337 | Beginning of the Hundred Years’ War | England and France enter prolonged conflict |
| 1346 | Battle of Crécy | Longbow changes battlefield tactics |
| 1347-1351 | Black Death | Massive demographic collapse |
| 1356 | Battle of Poitiers | King John II of France captured |
| 1360s | Free Companies devastate France | Mercenary warfare intensifies |
| 1381 | English Peasants’ Revolt | Social consequences of war and plague |
| 1389 | Battle of Kosovo | Major Ottoman expansion into the Balkans |
The Great Conflicts
The Hundred Years’ War
No conflict better defines the century than the Hundred Years’ War.
Although fought intermittently between 1337 and 1453, some of its most famous battles occurred during the 14th century. The war transformed military organisation, taxation, diplomacy and royal authority.
The English repeatedly defeated much larger French armies through discipline, tactical positioning and devastating longbow fire.
Battles such as Crécy and Poitiers permanently challenged the old belief that heavily armoured cavalry alone could decide wars.
The Scottish Wars of Independence
England also fought brutal campaigns north of the border.
Leaders such as William Wallace and Robert the Bruce demonstrated that careful use of terrain and disciplined infantry formations could defeat stronger armies.
Bannockburn became one of medieval Europe’s defining victories.
Iberian Warfare
Castile, Aragon, Portugal and Granada remained locked in almost continuous conflict.
The Reconquista accelerated while dynastic disputes created additional civil wars.
Italian Conflicts
Northern Italy became dominated by competing city states.
Professional mercenary captains, known as condottieri, increasingly replaced traditional feudal armies.
Money became almost as decisive as courage.
Ottoman Expansion
The Ottoman state emerged as one of Europe’s most dangerous new military powers.
Its victory at Kosovo in 1389 altered Balkan history for centuries.
Major Battles
| Battle | Year | Winner | Significance |
| Courtrai | 1302 | Flemish | Infantry defeats knights |
| Bannockburn | 1314 | Scotland | Scottish independence secured |
| Halidon Hill | 1333 | England | Longbow dominance demonstrated |
| Crécy | 1346 | England | Tactical revolution |
| Neville’s Cross | 1346 | England | Scottish invasion defeated |
| Poitiers | 1356 | England | French king captured |
| Najera | 1367 | Anglo-Castilian alliance | Black Prince victory |
| Kosovo | 1389 | Ottoman strategic victory | Balkan power shifts |
Forces
Military organisation evolved rapidly throughout the century.
| Army Type | Typical Strength | Core Units |
| English Field Army | 6,000 to 15,000 | Longbowmen, men-at-arms, infantry |
| French Royal Army | 15,000 to 35,000 | Knights, crossbowmen, infantry |
| Scottish Army | 5,000 to 12,000 | Spearmen, light infantry |
| Ottoman Army | 20,000 to 40,000 | Cavalry, infantry, archers |
| Italian City States | Variable | Mercenaries, crossbowmen, cavalry |
Leaders and Troop Composition
| Commander | Nation | Typical Army Composition |
| Edward III | England | Longbowmen supported by dismounted men-at-arms |
| Edward, the Black Prince | England | Mobile combined-arms army |
| Philip VI | France | Heavy cavalry with crossbow support |
| Robert the Bruce | Scotland | Dense schiltron formations with limited cavalry |
| Bertrand du Guesclin | France | Professional infantry and cavalry |
| Bayezid I | Ottoman Empire | Cavalry supported by disciplined infantry |
Arms and Armour
The century witnessed remarkable changes in military equipment.
Swords
Several sword types dominated European battlefields.
| Sword Type | Primary Users | Battlefield Role |
| Oakeshott Type XIII | Knights | Powerful cutting sword |
| Oakeshott Type XV | Knights | Armour-piercing thrusts |
| Oakeshott Type XVIII | Nobility | Excellent cut and thrust balance |
| Arming Sword | Men-at-arms | Standard sidearm |
| Falchion | Infantry | Powerful chopping weapon |
| Messer | German soldiers | Versatile military weapon |
Other Weapons
- English longbow
- Genoese crossbow
- Poleaxe
- Spear
- Billhook
- Lance
- Mace
- War hammer
- Early hand cannon
- Bombards
Armour
Plate armour developed rapidly during the century.
Typical protection included:
- Mail hauberk
- Coat of plates
- Brigandine
- Great helm
- Bascinet
- Visor helmets
- Plate gauntlets
- Steel greaves
By the century’s end, many elite knights wore armour recognisable as the classic late medieval harness.
Tactics
The Medieval battlefield changed dramatically.
Important tactical developments included:
- Defensive infantry formations
- Long-range missile superiority
- Combined arms tactics
- Greater use of field fortifications
- Dismounted knights
- Early artillery support
- Improved logistics
The image of heroic cavalry charging headlong into battle became increasingly outdated.
Sometimes common sense finally defeated expensive horses.
The Human Cost
War was only one catastrophe.
The Black Death removed perhaps one-third to one-half of Europe’s population.
Many communities faced repeated cycles of:
- Warfare
- Disease
- Crop failure
- Heavy taxation
- Famine
- Raiding
Entire generations grew up knowing almost constant instability.
Archaeology
Modern archaeology continues to reshape our understanding of the century.
Important discoveries include:
Visby Mass Graves (1361)
Mass graves on Gotland revealed extraordinary preservation of armour, weapons and battlefield injuries.
Towton’s Predecessors
Although Towton belongs to the following century, excavations of earlier battlefields have demonstrated how difficult medieval conflict can be to reconstruct archaeologically.
Crécy
Metal detector surveys continue to uncover arrowheads, horseshoes and military equipment connected with the campaign.
Bannockburn
Archaeological work has identified weapon fragments and landscape evidence supporting contemporary accounts.
Kosovo
Archaeology remains challenging because of later occupation, although continued research has improved understanding of troop movements.
Contemporary Quotes
Jean Froissart captured the brutality of the age:
“There was hard fighting and many a noble deed performed.”
The chronicler Henry Knighton reflected upon the arrival of plague:
“So great a multitude of people died that all believed it to be the end of the world.”
Jean le Bel wrote of Crécy:
“The English stood firm.”
Although medieval chroniclers often exaggerated numbers, their descriptions consistently emphasise exhaustion, fear and destruction alongside courage.
Why Historians Still Debate the Bloodiest Century
The 14th century was not necessarily the deadliest century in absolute numbers. Later conflicts such as the Thirty Years’ War and the world wars caused vastly greater casualties.
Yet within the medieval period, the fourteenth century stands apart because multiple disasters overlapped.
Europe experienced:
- International wars
- Civil conflicts
- Plague
- Economic collapse
- Social unrest
- Military revolution
Rarely has one century delivered quite so many simultaneous crises.
Legacy
The violence of the 14th century reshaped Europe.
Feudal armies gradually evolved into professional military forces.
Kings developed stronger taxation systems to sustain long campaigns.
Gunpowder weapons slowly began replacing traditional siege methods.
Plate armour reached remarkable sophistication.
The knight remained important, but no longer dominated the battlefield in the way earlier generations had imagined.
Above all, the century demonstrated that discipline, logistics and tactical innovation increasingly outweighed individual heroism. Medieval warfare had entered a new era, one that would eventually lead to the professional armies of the Renaissance.
Frequently Asked Questions
Why is the 14th century considered the bloodiest century of medieval warfare?
It combined prolonged wars, civil conflict, widespread raiding and the devastating impact of the Black Death, producing exceptional levels of military and civilian suffering.
What was the most important battle of the century?
Many historians would choose the Battle of Crécy in 1346 because it demonstrated the effectiveness of disciplined infantry and longbowmen against traditional knightly armies.
Which weapon changed warfare the most?
The English longbow had the greatest immediate battlefield impact, while early gunpowder artillery pointed towards the future of warfare.
Did knights disappear after the 14th century?
No. Knights continued to fight for centuries, but they adapted by fighting on foot more frequently and wearing increasingly sophisticated plate armour.
Takeaway
The 14th century remains one of the most consequential periods in medieval military history. It was an age in which warfare became larger, longer and more destructive than anything many Europeans had previously experienced. The great castles still stood, knights still rode beneath colourful banners and chroniclers continued to celebrate feats of arms, yet beneath the pageantry the foundations of medieval warfare were shifting.
Looking back, one cannot help but admire the resilience of those who endured such an unforgiving age. Equally, it is difficult not to conclude that living through the 14th century would have been a thoroughly exhausting experience. History books make it fascinating. Experiencing it first hand would have been considerably less enjoyable.
