`` huxley in hollywood `` is marred by factual errors : bertolt brecht was not at any time married to salka viertal ; howard hawks ' film `` sergeant york `` is not `` an anti-nazi blockbuster '' but is about an american pacifist in world war i ; the kurt weill and paul green play `` johnny johnson `` is a work of 1936 , not 1939 as dunnaway would have you infer from his text .