You can tell your children that Jesus wanted them to be earthly warriors because ""Do not give what is holy to the dogs; nor cast your pearls before swine, lest they trample them under their feet, and turn and tear you in pieces", but you can't stop them from reading the rest of the paragraph and realizing that Jesus was asking them, not to destroy their enemies, but to not put in risk their own moral position by criticizing others. You may want them to believe that Jesus, in the middle of a speech about not judging other people and sharing, suddenly decided that speak against the muslims that didn't even exist back then!
That is not going to fly.
Sooner or later, your "strict catholic crusader" state will be reformed into liberalism, because the Gospel will still exist, because your children, like Peter, will realize that Jesus meant it when he said "you are to be persecuted and martyred for me", that Jesus didn't say "you will live in a stable and powerful civilization, free of oppresion and death, thanks to me".
Christianity can't cure a disease it caused
Pagan Romans were fundamentally free of the chains of jewish power, so much that they almost exterminated them all in their own homeland after the rebellion of Bar Kocheba
It would be Christian Europe that would fall under permanent jewish influence, with the jewish-controlled churches banning europeans from financing and loaning, giving them as a monopoly to jews
By the modern era, Christians were so throughly judaized, that they started to actively wish for the restoration of Israel so that the end of the world would finally come around and their civilization would die!
And why would it be otherwise?
A religion which such obsession with death, with promise is the end of the world, is fundamentally a time-bomb in the basement of a civilization