I've just been hit with a harsh Mandela effect...

I genuinely remember vividly seeing history books coloring Italy in red during WWI, signifying it was part of the Central Powers. I would always hear the phrase: "Italy switched sides twice", enforcing the fact that Italy switched from Central Powers to the Entente in WWI, and from the Axis to the Allies in WWII. I remember seeing images of circa. 1915 (after the Treaty of London), where Italians split and fought one-another (The Kingdom of Italy versus the Italian militia) with The Kingdom of Italy very much winning by a landslide.