The Battle of Sedan: The Single Mistake That Lost France

The Battle of Sedan was the pivotal moment that broke the French defense. We trace how the Wehrmacht bypassed the Ardennes. In May 1940, the French military viewed the dense, wooded plateau of the Ardennes as an impassable forest, a natural barrier that would delay any mechanized force. They were wrong. This video examines the German advance through the region, analyzing how rapid movement and tactical aggression allowed them to reach the Meuse River before the Allies could react. We look at the terrain that defined the conflict, the lack of German tanks crossing the river initially, and the strategic collapse that followed. By June 10th, the situation had deteriorated further as Italy declared war, stretching Allied resources to a breaking point. We map the movement of these forces to show how a single, flawed assumption about geography led to the rapid fall of France in just six weeks. Worldwick explains the military history and geography that shaped the 20th century. Subscribe so you don't miss the next one, and tell us in the comments which historical campaign you want us to break down next.