Medieval Warfare: Knights, Longbows, and the Battles That Made Nations

By Echoes of Battle

Last updated: October 7, 2026

For a thousand years — roughly 500 to 1500 — European warfare belonged to the armored knight: the tank of the Middle Ages, a professional warrior on a warhorse, wrapped in steel, nearly unstoppable in a frontal charge. Then, one by one, the counters arrived: the Welsh longbow, the Swiss pike, disciplined infantry — and finally gunpowder. This hub collects our guides to medieval warfare's two most famous battles — Hastings (1066) and Agincourt (1415) — the bookends of the knight's golden age.

The Age of the Knight — and the Weapons That Killed Him

The knight's dominance rested on a system, not just a man. The stirrup and the couched lance turned horse and rider into a single shock weapon; the castle turned conquest into administration; and feudal obligation turned the aristocracy into a standing warrior class. For centuries, the answer to heavy cavalry was more heavy cavalry — which is why medieval battles so often came down to who broke first.

The counters arrived slowly, then all at once. At Crécy (1346) and Agincourt (1415), massed longbowmen proved that cheap missiles in disciplined hands could shred the flower of chivalry. In Switzerland, pikemen in dense squares learned to stand against any charge. And gunpowder — first as crude bombards battering castle walls, later as handguns — would finish what the longbow started. The knight did not vanish; he was out-ranged, out-drilled, and finally out-gunned.

The Hundred Years' War: England Against France

Both of our live guides belong to one sprawling conflict: the Hundred Years' War (1337–1453), the on-and-off struggle between England and France that did more than any other to define medieval warfare. It began with English kings claiming the French crown and continued through Crécy, Poitiers, and Agincourt — a century of campaigns in which smaller, disciplined English armies repeatedly humiliated larger French hosts. The war also produced Joan of Arc, whose relief of Orléans in 1429 reversed a decade of English gains and made her the most famous figure of the late Middle Ages. When the war finally ended, England had lost nearly all its French territory — but the longbow's legend, and the proof that preparation beats pedigree, had entered military history permanently.

Hastings 1066: One Day, One Crown

On October 14, 1066, William of Normandy's army — archers, infantry, and the decisive Norman cavalry — broke King Harold Godwinson's shield wall on Senlac Ridge near Hastings. Harold was killed on the field; by Christmas, William was crowned in Westminster Abbey. In a single day, England got a new aristocracy, a new language of power, and a new destiny. Read the full guide: Battle of Hastings 1066: How William Conquered England.

Hastings is the purest example of medieval combined arms: Norman cavalry could not break the shield wall head-on, so feigned retreats drew the English down the hill to be cut down in the open. Discipline beat fury — a lesson as old as the ancient warfare it descended from.

Agincourt 1415: The Longbow's Masterpiece

On October 25, 1415 — Saint Crispin's Day — Henry V's sick, starving army of roughly 6,000 men faced perhaps 25,000 French near the village of Azincourt. Mud, a narrow field, sharpened wooden stakes, and thousands of Welsh and English longbowmen did the rest: the flower of French chivalry died in the mud, and England won its most famous medieval victory. Read the full guide: Battle of Agincourt 1415: How 6,000 Englishmen Won.

Agincourt was Hastings in reverse — the outnumbered army winning through position and preparation — and it proved the knight's age was ending. No amount of armor helps in deep mud under an arrow storm, and no ransom culture survives an enemy fighting for its life.

Siege Warfare: The Slow Grind Behind the Legends

Open battles like Hastings and Agincourt were the exceptions; sieges were the rule. Medieval wars were usually decided not in an afternoon but over months, as armies starved castles into surrender — Harfleur nearly destroyed Henry V's army before Agincourt ever happened, and the bitter siege of Rouen did more to conquer Normandy than any single battle. The castle was medieval warfare's true superweapon: a fortified administrative center that let a few dozen men hold a whole region. Understanding the Middle Ages means understanding that most “battles” were really long, miserable investments in hunger.

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