Vatican to open secret archives on World War II-era and Pope Pius
https://edition-m.cnn.com/2019/03/04/world/vatican-archives-pius/index.html?r=https%3A%2F%2Fedition.cnn.com%2F
Even if Pope during World War 2 was determined to resist fascism strictly, I doubt it would have affected fascists.
It's not only ineffective, but also dangerous for Pope to do that, if countries occupied by majority of fascists try to hurt him because of his mindset.
But, it would be necessary for Pope to enlighten people not to rush to war, while peace is maintained.
