A Fascist Germany, don't hear that every day.
Well, if they have a leader that has a great enough charisma, he may be able to rearm Germany several years before the pressure of the Soviets led to the Western Allies removing the ban on armaments.
Whether they use them, however, is something different. Since unlike Italy they had no colonial possessions after WW1 and with Strong European states surrounding them, I really doubt they would go to war.