The religious aspect there is a red herring - people of the same religion can easily disagree on what God's opinion is. What actually matters is the aggregate p

The religious aspect there is a red herring - people of the same religion can easily disagree on what God's opinion is. What actually matters is the aggregate perspective of the people who control the military (particularly senior officers like generals). They can call it religious or they can call it something else, but it depends on what they agree justifies mobilising the troops.