Wellington’s Spymaster: The Genius Who Broke Napoleon’s Code

British War History November 19, 2025
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Welcome to British War History, your home for the UK's most epic conflicts. Our mission is to cover the entire saga of British warfare, but we begin with its most dramatic era: the 18th and 19th centuries. This is the Age of the Redcoat, of Wellington vs. Napoleon, and Nelson's Royal Navy. We tell the stories of impossible victories, forgotten colonial wars, and the brilliant (and mad) generals who fought them. Using cinematic storytelling and animated maps, we show you how battles were won. Subscribe for your weekly military documentary.

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History tells us the Duke of Wellington was a military genius with a supernatural intuition for the battlefield. We are told he could "guess" what was on the other side of the hill. But the truth is much more calculated. Wellington didn’t guess—he knew. In this episode, we uncover the forgotten story of Major George Scovell, the working-class outsider who revolutionized military intelligence during the Napoleonic Wars. While the aristocratic officers drank and gambled, Scovell waged a silent war by candlelight, intercepting French dispatches and wrestling with the "Grand Chiffre" (Great Cipher)—a code Napoleon believed was unbreakable. From the riverbanks of Oporto to the decisive slaughter at Salamanca, we reveal how Scovell’s "Army Guides" and his brilliance gave the Iron Duke the one thing more valuable than cannon fire: absolute certainty. In this documentary: The Blind Giant: Why the British Army was fighting in the dark in 1809. The Outsider: How a carver's son built the first modern intelligence network (SIGINT). The Great Cipher: The complex 1,400-number code designed to blind the British. The Turning Point: How a single decoded letter led to the destruction of 40,000 French troops at Salamanca. The Legacy: Why the British Army buried Scovell’s methods for a century. Join us as we decode the mind behind the Iron Duke. #britishwarhistory #britishhistory #britishmilitary #britisharmy #historydocumentary #militaryhistory #warhistory #historychannel #ukhistory #britishempire #redcoat #napoleonicwars #peninsularwar #georgescovell

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