Never. You keep your damned religion to yourself. Express yourself in church, not to your fellow soldiers, because they don't want to hear about how Jesus 'saved' you.
So much for tolerance. Supposed someone was going to die and didn't know about Christ do Christians just allow this to happen? Sorry that is not what their faith and what their God dictates.
People KNOW about Jesus and God and they are not going to change their minds and start believing just because they are dying. Get real.
I don't give a shit what your faith dictates. Have some respect for everyone around you and keep your religious shit to yourself.
But here's a compromise - how about we allow soldiers to spread their religious beliefs to those who are not interested, and if one soldier decides to use deadly force to shut that religious soldier up for good, they can.
I don't tell the world about my religion, what the hell gives Christians the right to shove their poxy religion down my throat?