April 9th, 1917. While the world watched Vimy Ridge, 24,000 men vanished into the earth itself. They lived for weeks in medieval chalk caves 100 feet underground, preparing for one of the most audacious military operations in history. This is the Battle of the Scarpe—the forgotten twin of Vimy Ridge that saved thousands of Canadian lives and shocked the German army with an attack they never saw coming. Hidden beneath the French town of Arras lay an extensive network of ancient quarries and medieval tunnels, some dating back to the 12th century. British and Canadian engineers transformed these forgotten caves into an underground fortress—a subterranean city complete with hospitals, command posts, railway lines, and sleeping quarters for an entire army. The Germans had no idea what was being prepared directly beneath their feet. When the attack came at dawn on April 9th, 1917, Canadian and British soldiers didn't cross no-man's land—they emerged FROM it. Climbing out of thirteen hidden tunnel exits, they appeared like ghosts directly in German trenches, achieving complete tactical surprise. The Germans, expecting an attack from distant British lines, instead found enemy soldiers already on top of them. The shock was absolute. The Battle of the Scarpe advanced three miles in a single day—an almost impossible achievement in WWI's trench warfare. Canadian troops captured the village of Fampoux, crossed the Scarpe River under fire, and reached the heights of Monchy-le-Preux. But this success came at a terrible cost: over 18,000 Allied casualties in six days of savage fighting. German counterattacks were ferocious, with elite Guards divisions thrown into desperate attempts to recapture lost ground. Yet this battle achieved its crucial objective: protecting Vimy Ridge's southern flank. While Canadians stormed the "impossible" ridge to the north, the Scarpe operation drew away German reserves that would have turned Vimy into a bloodbath. The diversionary attack became a triumph in its own right, demonstrating how engineering genius, tactical innovation, and raw courage could achieve what brute force alone never could. Why has this remarkable battle been forgotten while Vimy is celebrated? The answer reveals much about how we construct historical memory. Vimy had a clear objective—a ridge on a map—and was commanded by Canadian officers as a unified corps. The Scarpe was more diffuse, involving mixed British and Canadian forces under British command. It didn't fit the post-war narrative of Canadian military independence, so it faded from memory. The tunnels still exist beneath modern Arras, preserved and open to visitors. You can walk through the same chalk passages where soldiers spent their final nights, see names carved into walls by men who would die the next day, and stand in cathedral-sized caverns that sheltered thousands. It's one of the most direct connections to WWI history anywhere in the world—a physical monument to a forgotten battle that deserves to be remembered. This is the story of the Battle of the Scarpe: of men who lived underground for weeks, emerged to shock an army, and fought one of the most successful operations of WWI. Their achievement has been overshadowed by history, but their courage, sacrifice, and tactical brilliance deserve recognition alongside the more famous battles of the Great War. ⏱️ KEY TIMESTAMPS: 0:00 - The Attack Begins: 24,000 Men Vanish Underground 8:45 - Building the Underground City: Engineering Marvel Beneath Arras 18:30 - April 9th, 1917: Surprise Attack Shocks German Army 32:15 - The Forgotten Victory: Why History Overlooked This Battle 📚 ABOUT MIDNIGHT HISTORY: We uncover the forgotten battles, overlooked heroes, and untold stories that changed history. These aren't the famous names you learned in school—these are the shadows of the past where real history happened. Subscribe to discover the battles that shaped our world but vanished from memory. 🔔 SUBSCRIBE for more forgotten battles and hidden history: [Channel Link] 👍 LIKE if this story amazed you 💬 COMMENT: Did you know about the Battle of the Scarpe before this video? 📱 SHARE with history enthusiasts who love untold stories #BattleOfTheScarpe #VimyRidge #WWI #ForgottenHistory #CanadianHistory #WW1 #UndergroundWarfare #MilitaryHistory #HistoricalBattles #Arras1917 #TrenchWarfare #GreatWar #MidnightHistory #UntoldHistory #WorldWarOne