With American Army troops only a day away from the Germans, a Nazi general orders a bridge over the Rhine River be destroyed. Major Kreuger (Robert Vaughn) is the Nazi officer who realizes that if the Americans arrive on time, 50,000 German soldiers will have no escape route. The Allied commander orders Lieutenant Hartman (George Segal) to secure the bridge. With the help of Sergeant Angelo (Ben Gazzara), the Americans go deep into enemy territory to secure the strategically located crossing. Kreuger does his best to delay the destruction ordered by General Shinner (E.G. Marshall). As the American Army troop approaches, Kreuger is torn between following orders and saving the only means of escape from being dynamited in this action-packed war drama. Filming in Czechoslovakia was halted by the 1968 Russian invasion of the country. The production was finished in Italy.