Agincourt: How a Starving Army Won in the Mud

By the morning of 25 October 1415, King Henry V’s men had not eaten properly in days. They were sick, exhausted, and badly outnumbered by a French army blocking their path home. Within a few hours, that same ragged English force had inflicted one of the most lopsided defeats of the entire Hundred Years’ War. The Battle of Agincourt would boost English morale, cripple France, and open fourteen years of English dominance in the conflict — all decided on a muddy strip of ground near a small fortified village the two armies’ heralds would later agree to name the battle after.

A War Reignited by Failed Diplomacy

The fighting at Agincourt grew out of a negotiation that had collapsed. Henry V claimed the French throne itself, tracing the right back through his great-grandfather Edward III. In practice, English kings were usually willing to drop that grand claim if France would simply recognize English ownership of Aquitaine and other territories, under terms similar to the old Treaty of Brétigny. Henry called a Great Council in spring 1414 to discuss war, but his lords pushed him toward further talks instead.

Those talks dragged on with increasingly ambitious English demands: the outstanding 1.6 million crowns from King John II’s old ransom, ownership of Anjou, Brittany, Flanders, Normandy, and Touraine on top of Aquitaine, and a marriage to Charles VI’s daughter Catherine with a 2-million-crown dowry. The French countered with marriage and a far smaller dowry of 600,000 crowns, plus a modestly enlarged Aquitaine. By 1415 the gap was unbridgeable, and the English felt mocked. Parliament had already granted Henry a “double subsidy” — double the usual tax rate — to fund a war of recovery. On 19 April 1415, the Great Council finally said yes.

Henry landed in northern France on 13 August with an army of roughly 12,000 men and up to 20,000 horses, ferried across by a fleet once reported at 1,500 ships (almost certainly an exaggeration). His royal surgeon, Thomas Morstede, had been contracted in advance to bring a team of surgeons and instrument-makers along — a sign Henry expected casualties. He got them. The siege of Harfleur, meant to be quick, dragged on until the town surrendered on 22 September, and disease tore through the English ranks the whole time. The army didn’t march out again until 8 October, the campaign season nearly spent, with only one captured town to show for it.

A Desperate March to Calais

Rather than sail home having achieved so little, Henry pushed roughly 9,000 of his remaining men overland toward the English stronghold of Calais — partly to prove by his physical presence that his claim to Normandy was more than paperwork, and partly as a pointed challenge to the French dauphin, who had ignored Henry’s personal invitation to single combat at Harfleur.

The French, meanwhile, had been assembling their own army around Rouen, hoping for 9,000 troops, though it wasn’t ready in time to save Harfleur. Once Henry turned north, the French shadowed him and succeeded in blocking the River Somme crossings, forcing the English south and away from Calais before they finally found a ford near Péronne, at Béthencourt and Voyennes. With the river no longer a shield, the French hesitated to commit to a pitched battle, instead calling a semonce des nobles — a summons to every local noble to join the ranks — while they stalked Henry’s exhausted column.

By 24 October the two armies stood facing each other, but the French held back, waiting for still more reinforcements. Both sides spent that night on open ground. The next morning the French opened negotiations, almost certainly as a stalling tactic. Henry had little appetite for a fight under these conditions — his men had marched 260 miles in two and a half weeks, had almost no food, were riddled with dysentery, and faced a far larger force of well-equipped French men-at-arms. But waiting only weakened him further and let more French troops arrive. He ordered the advance.

Stakes in the Ground, Silence in the Camp

Henry arrayed his roughly 1,500 men-at-arms and 7,000 longbowmen across a defile only 750 yards wide — the right wing under Edward, Duke of York, the center under Henry himself, the left under the veteran Baron Thomas Camoys, with the archers commanded by another old hand, Sir Thomas Erpingham. The standard English formation put longbowmen on the flanks and armored men-at-arms, four ranks deep, in the center. The archers drove angled wooden stakes into the earth in front of their positions, a defense against cavalry charges possibly borrowed from the 1396 Battle of Nicopolis, where the Ottomans had used the same trick against French horsemen.

The night before, fearing surprise raids and wanting total focus from his men, Henry ordered absolute silence in camp — the penalty for breaking it was having an ear cut off. He told his soldiers he would rather die in the coming fight than be captured and ransomed. In his pre-battle speech he leaned on the justice of his cause and reminded the men of past English victories over the French. Burgundian sources claim he closed by telling his archers the French had vowed to cut two fingers from the right hand of every bowman they caught, so he could never draw a longbow again — whether that boast was ever actually made remains uncertain, though capture without ransom money likely meant death regardless.

Across the field, the French had mustered around 10,000 men-at-arms plus 4,000 to 5,000 archers, crossbowmen, and shield-bearers — 14,000 to 15,000 fighters in total, with potentially thousands more armed servants attached. They organized into a vanguard and a main battle, mostly dismounted men-at-arms, with a special cavalry force assigned to smash the English archers and a second mounted unit meant to strike the English rear and baggage train. So many noblemen demanded places in the front lines — where glory and ransom money were thickest — that the crossbowmen and archers, originally meant to flank the infantry, got shoved to the back instead, deemed unnecessary. The vanguard alone held 4,800 men-at-arms arrayed sixteen ranks deep, commanded by Constable Charles I d’Albret and Marshal Boucicaut, with nearly every leading French nobleman crammed into its lines. The dukes of Alençon and Bar led the main battle behind them. King Charles VI, suffering from mental illness, was nowhere near the command — leaving France’s army to be run by its constable and its nobles, a decision whose consequences were about to become clear.

What we still don’t know

Even the ground itself resists certainty. Historians agree the fighting happened somewhere near Azincourt, in the narrow strip between the woods of Tramecourt and Azincourt, but the lack of archaeological finds at that traditional site has pushed some scholars, including Michael Livingston in 2019, to argue for a location further west. The battle is unusually well recorded for its time, with at least seven contemporary accounts and three eyewitness versions, yet that documentation hasn’t settled where the armies actually stood. The story of the French vowing to mutilate captured archers’ hands also remains an open question — a vivid detail passed down through Burgundian chroniclers that can’t be confirmed as fact. And the full scale of the French army is debated too, since historians disagree on whether the thousands of armed valets accompanying the men-at-arms should count as combatants at all.

Sources

– This article is a synthesis of the Wikipedia article on Battle of Agincourt (en.wikipedia.org/wiki/Battle_of_Agincourt), which itself cites the underlying scholarship. Readers wanting primary sources should follow that article’s reference list.