At the end of this season the championship was suspended due to World War II. After the war, the devastation left by the battles on the Gothic Line made travels from one side of the Apennines to the other very difficult. The championship was restarted in 1945 with a transitory season where northern and southern sides took part in nearly separated competitions. For these reasons, the championship composition was deeply changed.
All the sides that took part in the Final rounds were arbitrary promoted to Serie B 1945-46 with the exception of Varese that asked to take part to the regional leagues because its home stadium was destroyed by bombardment.
Other 21 sides were promoted by the FIGC considering final placing, financial situation, previous sport merits, geographical representation, and, last but not least, if they had suffered wrongs made by the Fascist regime.