Re: Is it possible to change sides during the war?
There is no way in TripleA to change alliances directly. You have 2 methods.
If you are using political relationships, you can change the relationship with a trigger.
You could also try using 2 Italians nations, one for the Axis and one for the Allies. You will still need some triggers to turnover North Italy to Italy_Allied.
Note that the Italian military largely dissolved so you ignore the surviving Italian units. For countries that changed sides intact (Romania,Bulgaria & Finland), you should use political relationships.