Frightfulness (Schrecklichkeit) is a method of breaking down the moral and crushing the spirit of adversaries in war. It was practised by the Germans during the Great War and the Second World War, being advocated by such writers as Von der Goltz who wrote; 'Inexorable and seemingly hideous callousness is among the attributes necessary to him who wo... Found on http://www.probertencyclopaedia.com/browse/FF.HTM