The crisis of faith among Iranian children of Iran- Iraq war martyrs

I have been trying to wrestle with this issue in my head for a while now ... how did the children of those who were killed fighting in Iran-Iraq war become disenchanted with Islam and in some cases with religion in general? Is the same thing likely to happen among American veterans of Iraq and Afghanistan wars?
Most young Iranian men of this category with whom I've had the pleasure of speaking, have a very unique view of Islam.