Desc: History's Raiders: The Fall of Fort Eben Emael: Directed by Jonathan Martin. With Adolf Hitler. The Belgian fort of Eben-Emael, considered impregnable by the Allies, was the key to the defense of the Belgium and France plains in World War II. The German army, at Hitler's urging, developed a plan to attack the fort using glider troops armed with revolutionary "hollow charges" designed to knock out the forts formidable artillery emplacements and allow the panzers to rapidly pierce the Allied lines.