Adolf Hitler made several bold and aggressive decisions during World War II—but one military mistake proved fatal and changed the course of history forever. In this video, we explore Hitler’s biggest military error: the invasion of the Soviet Union (Operation Barbarossa). What began as a rapid advance turned into a catastrophic failure due to overconfidence, poor planning, underestimating the Red Army, and total unpreparedness for the brutal Russian winter. You’ll learn: Why Hitler ignored his generals’ warnings How weather, logistics, and geography crushed the German army The role of battles like Stalingrad in Germany’s downfall How this single decision shifted the balance of World War II This video breaks down the strategy, the mistakes, and the consequences in a clear and engaging way for anyone interested in World War II history, military strategy, and historical turning points. 📌 If you’re passionate about WW2 facts, military history, and untold war stories, this video is for you