Military History of France: The Medieval Period

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The military history of France during the medieval period closely followed the rise and eventual decline of the armored knight. From the disintegration of Charlemagne’s empire to the establishment of a professional standing army, the French military evolved in response to changing tactics, technologies, and political dynamics.

Early Medieval Warfare and the Rise of the Knight

Following Charlemagne’s rule, the fragmentation of the Frankish Empire and Viking incursions and internal conflicts led to the decline of large, infantry-based armies. Instead, a smaller, more mobile cavalry force emerged as the dominant military component. The development of superior armor—including steel helmets, coats of mail, and later full plate armor—enhanced the effectiveness of mounted warriors. By the 11th century, the shock charge of cavalry had become a staple battlefield tactic.

During this time, agricultural advancements enabled Western European nations, including France, to increase food production, leading to a substantial aristocratic class under the Capetian dynasty. The rise of feudalism further solidified the role of knights, who were bound by feudal obligations to serve their lords in warfare. However, local lords often engaged in independent military campaigns, sometimes in defiance of the French monarchy.

Castle Warfare and the Feudal Conflicts

As centralized authority weakened, the construction of castles became widespread in France during the 10th century. These fortifications provided strategic defensive positions and served as power bases for local lords. Castles played a critical role in medieval warfare, being both a refuge in times of siege and a launching point for military expeditions. The dominance of castles led to siege warfare becoming a central aspect of military conflicts in medieval France.

The Crusades and French Military Expansion

The French nobility played a leading role in the Crusades, with knights and lords forming large contingents in various campaigns. Some scholars argue that the Crusades were partially driven by the need to redirect landless knights away from internecine warfare in France. French crusaders were so prominent that the Arabic term for “crusader” is Al-Franj, meaning “The Franks.” Old French also became the lingua franca of the Kingdom of Jerusalem.

Conflicts with England and the Decline of the Knight

Between 1202 and 1343, France engaged in multiple conflicts with England, successfully reducing English holdings on the continent to a few small provinces. Key engagements included:

• Bouvines Campaign (1202–1214) – Marked by Philip II’s decisive victory at the Battle of Bouvines.
• Saintonge War (1242) – A struggle over control of Poitou.
• War of Saint-Sardos (1324) – A short conflict over Gascony.

The late medieval period saw the decline of the knight as the dominant force on the battlefield. The Black Death, peasant revolts such as the Jacquerie, and internal conflicts like the Armagnac-Burgundian Civil War weakened France’s military power. English invasions during the Hundred Years’ War further challenged French military dominance. Technological advancements, particularly in artillery, further reduced the effectiveness of heavy cavalry.

The Hundred Years’ War and French Resurgence

The Hundred Years’ War (1337–1453) was a pivotal conflict between France and England, during which the effectiveness of traditional knightly warfare was challenged. The English initially gained the upper hand through superior tactics, including the use of longbowmen. French forces suffered devastating defeats at:

• Battle of the Golden Spurs (1302) – Flemish militias defeated French knights.
• Battle of Agincourt (1415) – Poor coordination and narrow terrain led to the loss of thousands of French knights.

Despite these setbacks, France rebounded in the latter half of the war. Key factors in this resurgence included:

• The Creation of the Compagnies d’Ordonnance (1445) – Charles VII established the first standing army in Western Europe, consisting of 20 companies of 600 men each.
• Tactical Reforms – Professionalization of the army led to more disciplined and effective military campaigns.
• Victories at Orléans, Patay, Formigny, and Castillon – These battles decisively pushed the English out of France, leaving only Calais under their control.

Medieval French Military Equipment

The equipment of French soldiers varied depending on their wealth and status. A classification based on property value determined the arms and armor a soldier could afford:

Property Worth	Military Equipment
L60+	Hauberk, helmet, sword, knife, spear, and shield
L30+	Gambeson, sword, knife, spear, and shield
L10+	Helmet, sword, knife, spear, and shield
L10<	Bow, arrows, and knife

Conclusion

The medieval period of French military history was marked by the rise of feudal knights, the dominance of castles, and the transition from feudal levies to professional armies. The Hundred Years’ War played a crucial role in accelerating these changes, leading to the decline of traditional chivalric warfare and the establishment of a centralized, professional military force that would shape the future of France’s military endeavors.

References

• Contamine, Philippe. War in the Middle Ages. Blackwell, 1984.
• Verbruggen, J. F. The Art of Warfare in Western Europe During the Middle Ages: From the Eighth Century to 1340. Boydell & Brewer, 1997.
• Oman, Charles. A History of the Art of War in the Middle Ages: Volume I & II. Greenhill Books, 1991.
• Nicolle, David. The Crusades. Osprey Publishing, 2001.
• Tuchman, Barbara W. A Distant Mirror: The Calamitous 14th Century. Alfred A. Knopf, 1978.
• DeVries, Kelly. Joan of Arc: A Military Leader. Sutton Publishing, 1999.
• Allmand, Christopher. The Hundred Years War: England and France at War c. 1300–1450. Cambridge University Press, 1988.
• Prestwich, Michael. Armies and Warfare in the Middle Ages: The English Experience. Yale University Press, 1996.
• Rogers, Clifford J. War Cruel and Sharp: English Strategy under Edward III, 1327–1360. Boydell & Brewer, 2000.
• Barker, Juliet. Agincourt: The King, the Campaign, the Battle. Little, Brown & Co., 2005.
• Bachrach, Bernard. Early Carolingian Warfare: Prelude to Empire. University of Pennsylvania Press, 2001.
• Keen, Maurice. Chivalry. Yale University Press, 1984.
• Beeler, John H. Warfare in Feudal Europe, 730–1200. Cornell University Press, 1971.
• Vale, Malcolm. War and Chivalry: Warfare and Aristocratic Culture in England, France, and Burgundy at the End of the Middle Ages. University of Georgia Press, 1981.

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