jesus says

so world war two just didnt happen or what?

Prayer assumes that the minds behind WW2 were clean by post Abrahamic/Christian standards.

Titus 1:15-16~ Unto the pure all things are pure: but unto them that are defiled and unbelieving is nothing pure; but even their mind and conscience is defiled.
They profess that they know God; but in works they deny him, being abominable, and disobedient, and unto every good work reprobate.

‭Exodus 20:4-5 KJVAAE‬
[4] Thou shalt not make unto thee any graven image, or any likeness of any thing that is in heaven above, or that is in the earth beneath, or that is in the water under the earth: [5] thou shalt not bow down thyself to them, nor serve them: for I the Lord thy God am a jealous God, visiting the iniquity of the fathers upon the children unto the third and fourth generation of them that hate me;

https://youtu.be/I1r8GnecPlY?si=BPatMW08T9gkC6xg