In this episode of pplpod, we dig into the Battle of Agincourt, one of the most famous military victories in English history and one of the messiest realities behind the medieval war myth. The episode begins with Henry V’s claim to the French throne, the failed negotiations with France, the double subsidy granted by Parliament, and the 1415 invasion that began with the siege of Harfleur. What looked like a bold campaign quickly became a disaster as disease, especially dysentery, tore through the English army. Instead of sailing home after Harfleur fell, Henry made the risky decision to march his weakened force across hostile territory toward Calais, forcing a final confrontation with the French near the woods of Agincourt.

The episode also breaks down why the battle unfolded the way it did: the narrow battlefield, the dense woods, the rain-soaked plowed earth, the defensive stakes placed by English archers, and the devastating effect of longbows on French cavalry and horses. It examines the debate over army sizes, the physical limits of fighting in plate armor, and how the French advance turned into a suffocating crush in the mud. The discussion also confronts the darkest controversy of the battle: Henry’s order to execute French prisoners after his baggage train was attacked and he feared a renewed assault. The episode closes by exploring the political consequences for France, the rise of the Agincourt legend, and how Shakespeare’s Henry V helped turn a brutal, disease-ridden battlefield into one of England’s most enduring national myths.

Key topics covered:

• Henry V’s claim to France and the failed diplomatic negotiations

• The siege of Harfleur, dysentery, and the desperate march to Calais

• Longbows, wooden stakes, mud, armor, and battlefield physics

• The prisoner massacre and the brutal economics of medieval ransom

• Shakespeare, St. Crispin’s Day, and the mythmaking of Agincourt

Source credit: Research for this episode included transcript materials and supporting historical sources accessed 6/10/2026. Content is summarized and adapted for commentary and educational use.