I don't think it's accurate to describe Zen having its own deities. At least as practiced in my center, we don't deify the Buddha but we do show respect for him and his teachings What's more, it's not unusual for someone to practice a theistic religion (say, Christianity or Judaism) and also practice Zen. There need not be a conflict.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.