 They and 1,300 liberators and fortresses could smash the big German railroad yards at Munster, a tank factory at Hanover, and fuel plants around Dresden. When they and their escort of more than 750 fighter planes returned to Britain, the RAF took over. Hundreds of escorted British landcastles battered two benzal plants north of the Ruhr in broad daylight. And the German radio reports more bombers over the Reich tonight.