Repercussions

The long English occupation and the inspirational example of Joan of Arc crystallized a sense of shared French identity distinct from feudal loyalty to local lords. France emerged from the war with a sense of nationhood — the idea that 'France' was a real entity worth dying for, not merely the sum of baronial fiefdoms. Joan of Arc's example showed that a peasant girl from Lorraine could feel as French as a Parisian nobleman.

The systematic French reconquest under Charles VII, culminating at Castillon in 1453, expelled England from all French territory save Calais. England lost all French territories won during the war except Calais (held until 1558). The dream of an Anglo-French dual monarchy — which had seemed within reach under Henry V — died permanently. English foreign policy pivoted away from continental conquest.

English longbowmen dominated the war's first century, but gunpowder artillery — especially the Bureau brothers' field guns — ultimately negated the longbow advantage. The longbow's effectiveness at Crécy, Poitiers, and Agincourt transformed European military thinking. But Formigny and Castillon showed that artillery could force archers from defensive positions and break the tactical formula that had seemed unbeatable.

The Bureau brothers' systematic development of field artillery for Charles VII produced cannon that could reduce castles quickly and neutralize infantry formations in the field. The stone castle — the foundation of medieval military power — became obsolete in a generation. Artillery that could reduce any fortification in days or weeks made the feudal defensive system that had protected noble power for centuries untenable.

Joan's extraordinary career — peasant girl to military commander, crowned heads to heresy trial, execution to rehabilitation — made her story irresistible to every subsequent generation. Joan of Arc became the most powerful symbol of French nationhood, female courage, and the power of faith over established authority. Her trial and execution became a touchstone for questions about institutional injustice.

The loss of France humiliated the English nobility, discredited Henry VI's government, and left thousands of battle-hardened soldiers unemployed and angry. The catastrophic loss of France delegitimized Henry VI's reign and ignited the dynastic conflict between Lancaster and York that became the Wars of the Roses (1455–1485). Many of the leading figures in that civil war had been shaped by the French campaigns.

Charles VII's creation of a permanent professional army funded by regular taxation gave the French crown an instrument of power independent of feudal levies. France emerged from the war with the most powerful centralized monarchy in Europe. Charles VII's military reforms — standing cavalry companies, professional artillery, regularized taxation — gave his successors Louis XI and then Francis I the tools to dominate their nobility.

The repeated slaughter of armored French knights by English longbowmen at Crécy, Poitiers, and Agincourt demonstrated that chivalric cavalry charges were militarily suicidal against disciplined ranged weapons. The ideal of the knight as decisive military force — which had organized European military thinking since the Carolingians — was destroyed. Artillery and infantry tactics replaced cavalry charges as the decisive elements of warfare.

The plague arrived in Europe in 1347 — just after Crécy and during the siege of Calais — and killed roughly a third of the population of both England and France over the following years. The Black Death disrupted the war's momentum for a decade, killing the manpower both sides needed for campaigns. It also transformed the social order: labor shortages empowered surviving peasants, weakened feudal lords, and contributed to the Peasants' Revolt in England (1381) and the Jacquerie in France (1358).