Battle of Britain: quick shots of crew manning antiaircraft gun, of mechanics working on Spitfires. Montage of antiaircraft guns, listening post, spotters at the ready. ELS of fleet of German aircraft approaching. Shots of scramble, pilots racing to their planes, taking off, of antiaircraft guns firing. Series of quick shots of air battle including MSs of British and German planes. Shot of Spitfires taking off en masse. AIR TO AIR SHOT of German bombers. Shots of siren spinning, of parliament building, barb wire in foreground. Shots of air battle, bombs dropping, house blowing up, German planes being shot down. Shots of wreckage. Sequence on British planes landing on base.