Long before World War II gave the word its modern meaning, kamikaze meant divine wind, the typhoons that twice destroyed the largest naval invasions in history. This episode journeys back to the 13th century, when Kublai Khan's seemingly unstoppable Mongol Empire turned its sights on Japan and was wiped from the sea not once but twice by catastrophic storms.

The story examines the brutal first invasion of 1274, the seven-year defensive effort that produced the stone walls of Hakata Bay, and the staggering second armada of 1281 that was left trapped on the water until nature struck. It then unpacks how the events birthed a powerful cultural mythology of divine protection, and how that symbol was later weaponized as wartime propaganda.

• Why the Mongols were forced back to their ships and into the kill zone
• How a two-meter st ...