The Hundred Years’ War and the French Campaign

Henry V’s reign is best known for his renewed campaign in the Hundred Years’ War against France—a long-running conflict between England and France over claims to the French crown and territorial control.

In 1415, Henry launched a major invasion of France. His campaign was meticulously planned and brilliantly executed. After capturing the port of Harfleur, Henry’s army marched towards Calais, facing a formidable French force at the Battle of Agincourt on October 25, 1415.

The Battle of Agincourt


The Battle of Agincourt is one of the most famous military engagements in English history. Despite being heavily outnumbered and weakened by illness, Henry’s forces achieved a stunning victory. The English longbowmen played a crucial role, decimating the French cavalry and knights caught in muddy terrain.

Henry’s leadership during the battle was legendary. He rallied his troops, famously fighting alongside them and inspiring loyalty and courage. His victory at Agincourt significantly boosted English morale and established him as a national hero.

The Treaty of Troyes and Marriage


Following his military successes, Henry V capitalized on French political instability. In 1420, he negotiated the Treaty of Troyes, which recognized him as the heir to the French throne and regent of France, disinheriting the Dauphin Charles (later Charles VII).

Henry also married Catherine of Valois, daughter of King Charles VI of France, cementing his claim. This union symbolized a potential unification of the English and French crowns, a vision that, however, would not be fully realized. shutdown123

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