Filippo Walter Ratti ( 1914 &ndash; 1981 ) was an Italian screenwriter and film director . After working as an assistant director for several years , he made his directoral debut in 1946 . The following year he directed the biopic '' Eleonora Duse '' . In 1962 he directed '' Ten Italians for One German '' , a portrayal of the 1944 Ardeatine massacre in Rome
Ardeatine massacre
Ardeatine massacre
Filippo Walter Ratti