Aldo Vidussoni's reputation made him an asset with the Benito Mussolini régime, and he became an important figure in the hierarchy of the Fascist university corporations - the Gruppi universitari fascisti (GUF).

On 26 December 1941, while still quite young, Vidussoni was appointed national secretary of the PNF, replacing Adelchi Serena by order of Mussolini.

His scant political experience and the constant criticism of other leaders had made him ill-suited for the task: despite his initial appeal as a decorated soldier, he soon became widely regarded as ineffective, even "ridiculous".

[1] According to the diaries of the Foreign Minister and son-in-law of Mussolini, Count Galeazzo Ciano, Vidussoni came to see him on 5 January 1942 with 'savage plans for the Slovenes.

[1] After the pro-Allied coup d'état inside the Grand Council of Fascism in late July 1943 and the armistice signed by the Pietro Badoglio government in Cassibile, Vidussoni chose to side with the Nazi-backed Italian Social Republic (established and led by Mussolini in the north).