This study is the first to use detailed textual analysis to determine the position occupied by the well-known conservative-revolutionary cultural critic and novelist Frank Thiess (1890-1977) in the literary landscape of the Weimar Republic. In so doing, it casts light on the ambivalent oscillation in his works between criticism and affirmation of National Socialism, a feature typical of the so-called 'inner emigration' phenomenon. The study concentrates on his historical writings and essays, with additional reference to contemporary accounts of the war and research contributions by professional historians.