When the early 15th‑century bell tolls, most people think of the English and the French. But the Hundred Years’ War was a tangled web of alliances, skirmishes, and rival claims that spilled far beyond the two great kingdoms. The monarchies that fought intermittently—sometimes as allies, sometimes as enemies—were more varied than the usual textbook narrative suggests. Let’s dig into who they were, why they were involved, and what that meant for the war’s long arc That's the whole idea..
What Is the Hundred Years’ War?
The Hundred Years’ War (1337‑1453) isn’t a single, continuous conflict. It’s a series of wars, truces, and skirmishes rooted in dynastic claims to the French throne, territorial disputes, and the shifting loyalties of Europe’s noble houses. Think of it as a long, messy family feud that raged across generations, with each side trying to outmaneuver the other while also juggling local rebellions and rival powers.
Not the most exciting part, but easily the most useful Simple, but easy to overlook..
The core players are England and France, but the war’s reach extended into the Low Countries, Italy, Iberia, and even the Mediterranean. Monarchies that would later be remembered for their own histories—such as the Burgundians, the Plantagenets, the Valois, the Aragonese, the Portuguese, and the Holy Roman Empire—had moments where they threw their swords into the fray Surprisingly effective..
Why It Matters / Why People Care
Understanding the full roster of monarchies involved gives us a clearer picture of how the war shaped modern Europe. In real terms, it shows that the conflict wasn’t just a bilateral battle but a crucible that forged new national identities, altered trade routes, and set precedents for diplomatic warfare. Also worth noting, the intermittent nature of the fighting explains why the war stretched over a century: alliances dissolved, new claims emerged, and old grudges festered.
If you’re a history buff, a student, or just a curious reader, knowing which monarchies fought—sometimes side by side, sometimes against each other—adds depth to the story. It moves the narrative from “England vs. France” to a richer tapestry of power dynamics, economic interests, and personal vendettas It's one of those things that adds up. That's the whole idea..
How It Works (or How to Do It)
The Plantagenet Kings of England
The Plantagenets began the conflict by asserting that Edward III’s mother, Isabella of France, was the rightful heir to the French throne. Edward’s claim set the stage for a series of incursions into French territory. While the English monarchy was the primary instigator, its fortunes fluctuated with the rise and fall of its allies.
The Valois Dynasty of France
The Valois line was the French response. They defended their claim to the throne and sought to repel English incursions. Over the war’s course, different Valois kings—Philip VI, Charles V, Charles VII—shaped the French strategy, often leveraging alliances with other monarchies to counter English power Simple as that..
We're talking about where a lot of people lose the thread Small thing, real impact..
The Burgundian State
Burgundy was a powerhouse in its own right, ruled by the Valois‑Burgundian line after 1384. Plus, initially a French vassal, the Dukes of Burgundy swung between supporting England and France. Now, their most notable intervention was the 1470–71 “Burgundian Wars” that overlapped with the later stages of the Hundred Years’ War. The Burgundians controlled significant French territories and were a key player in the shifting loyalties of the period Practical, not theoretical..
The House of Castile (Spain)
The Castilian monarchy, under Henry II and later John II, had interests in French affairs through marital alliances and territorial claims in the Pyrenees. Castile’s intermittent support for either side was driven by the need to secure its borders and expand its influence in the Iberian Peninsula That's the part that actually makes a difference..
The Kingdom of Portugal
Portugal’s involvement was largely indirect, but it played a role through its alliances with Castile and its own maritime ambitions. Portuguese merchants and explorers sometimes supplied English forces with goods, while the Crown occasionally used the conflict to secure trade privileges along the Atlantic coast Surprisingly effective..
The Holy Roman Empire
The Holy Roman Empire, a loose confederation of German principalities, had a more complex relationship with the war. Now, while the Empire itself was not a central player, individual princes—most notably the Habsburgs—had vested interests in French succession disputes. The Empire’s internal politics meant that it could support either side at different times, often to counterbalance French influence in the region.
The Kingdom of Aragon
Aragon, under the reign of James II and later Peter IV, had territorial ambitions in the Mediterranean and the Balearic Islands. Its involvement was sporadic, usually aligning with the side that best served its interests in the Iberian Peninsula and the Mediterranean trade routes.
The House of Savoy
Savoy, a strategically located state between France and Italy, often found itself caught between the two great powers. The Savoyards provided troops, resources, and occasionally negotiated truces, all while maintaining their own sovereignty Worth keeping that in mind..
The Kingdom of Naples
Naples, ruled by the Angevins and later the Aragonese, had a stake in the war through its claims to the French throne via the House of Anjou. Its intermittent support for the English or French was largely dictated by its own internal struggles and the need to protect its southern Italian territories.
Minor Noble Houses and City-States
Beyond the major monarchies, numerous smaller nobles, city-states, and mercenary companies—like the English Black Prince’s musketeers or the French Crown Regiments—fluctuated between sides. Their allegiances were often driven by pay, land grants, or personal vendettas.
Common Mistakes / What Most People Get Wrong
- Assuming the war was strictly England vs. France. That’s the simplest narrative, but it ignores the role of Burgundy, Castile, and other powers that shifted sides multiple times.
- Thinking all Burgundian support was for England. The Dukes of Burgundy were opportunists; they switched allegiance when it suited their territorial ambitions.
- Overlooking the influence of the Holy Roman Empire. Individual princes within the Empire had a decisive impact on the balance of power, even if the Empire as a whole stayed neutral.
- Ignoring the maritime dimension. Portugal and Spain’s naval prowess affected supply lines and troop movements, even if they didn’t directly march on French soil.
- Assuming the war ended in 1453. The conflict’s aftereffects—like the Treaty of Picquigny—continued to shape European politics for decades.
Practical Tips / What Actually Works
- Map it out. Visualize the shifting alliances on a timeline. Mark key events like the Treaty of Brétigny (1360) or the Burgundian Wars (1470–71). A visual aid helps untangle the complex web.
- Read primary sources. Documents like the Chronicle of Jean Froissart or the Letters of the Black Prince give firsthand insight into why monarchies changed sides.
- Focus on motives. Every shift in allegiance was driven by concrete motives—territorial gains, marriage alliances, or financial incentives. Keep that lens when studying each monarchy’s actions.
- Compare outcomes. Look at how each monarchy’s involvement affected its own domestic stability. To give you an idea, the Burgundian Wars drained Burgundy’s resources, leading to its eventual decline.
- Cross‑reference with other wars. The Hundred Years’ War overlapped with the Italian Wars and the Reconquista. Understanding those contexts clarifies why certain monarchies were pulled in.
FAQ
Q: Did all monarchies fight at the same time?
A: No. The war’s intermittent nature means that different monarchies were involved at different stages. As an example, Burgundy was a key ally of England in the 1440s but later turned against them in the 1470s.
Q: Why did the Burgundians switch sides?
A: They sought to maximize territorial gains and political influence. When English influence waned, Burgundy saw an opportunity to assert its own power, especially over French territories.
Q: Were the Portuguese really involved?
A: Directly, not much. Indirectly, yes—through trade, supplying goods to the English, and aligning with Castile when it suited their maritime interests And that's really what it comes down to..
Q: How did the Holy Roman Empire influence the war?
A: Individual princes, especially from the Habsburg family, used the conflict to counterbalance French power, sometimes supporting the English, sometimes the French, depending on their own territorial disputes.
Q: Was the war truly over after 1453?
A: The formal end was in 1453, but the political ripples—like the rise of the Burgundian state and the shifting balance between England and France—continued for decades.
Closing paragraph
The Hundred Years’ War was more than a simple clash between two crowns; it was a centuries‑long chess match involving a host of monarchies, each with its own agenda. By pulling back the curtain on who fought, when, and why, we see a richer, more nuanced history—one that shows how the past’s tangled alliances still echo in the borders and politics of modern Europe.
