Möller is considered one of the pioneers of fascism in the Banat. In 1931, he founded the first Banat local group of the "National Socialist Self-Help Movement of the Germans in Romania" (NSDR) in Jimbolia (), Romania. Shortly afterwards, Möller became the first Gauleiter of the Banat in 1932. In the same year, he founded the National Socialist newspaper "Der Stürmer" in Timișoara. In the spring of 1933, he resigned as Gauleiter. In the same year, Möller managed the Sibiu "Office for ideological education and cultural policy". After his application for admission to the Wehrmacht was rejected because he had exceeded the entry age limit, he wrote to Karl Schworm on 7 September 1939: "What would I be happy if fate put me at the front, regardless of whether in west or east! I can't think of a better way to end my fighting life than to end up for the leader and the empire". In 1941, he was appointed the "cultural council "of the German ethnic group in Romania. Author According to "Kulturportal West-Ost", in addition to his politics "von Möller" developed a lively writing activity, which was based on the great novels of Adam Müller-Guttenbrunn (1852–1923) and the intellectual and political development of Southeastern Germany, but especially the Banat Swabia, from the settlement until their ethnic awakening at the turn of the 20th century. As editor-in-chief of the 'Banater Deutsche Zeitung', he served the 'Banater Schwäbische Volksgemeinschaft'.” Von Möller's novels portray events from the perspective of their time. He was one of the most popular authors of historical novels of his time, but with a nationalist and anti-Semitic touch. Von Möller's ultranationalist writings began in the early 1920s. As "advocate of folk anti-Semitism" he wrote in his Gazette "The Striker". In his two-volume work How the Swabian communities came into being (Timișoara 1923–24), Möller in 1924 "openly expressed his chauvinistic ideas and ideas by incorporating the 'Germanic racial element' (Vol. 2, p. 22) of the German superman into the foreground of his historical statements. In the 1936 novel Die Werschetzer Tat ("The Weshetzer Act") he glorified the defence of Werschetz on the westernmost slope of the Banat Mountains at the time of the last great invasion of the Banat in 1788 by the Turks. Based on historical events, the author portrays the rural life of German settlers of the first generation in the midst of a colourful mix