World War II is raging, and a captured American general is being held hostage in Schloss Adler, a Bavarian citadel that's nearly impossible to breach. It's up to a group of skilled Allied soldiers to liberate the general before it's too late. But can they pull off the dangerous mission? This 1968 classic pairs the enigmatic Richard Burton with the iconic Clint Eastwood in a tale of wartime bravery and treachery.