I should point out that if you are a perfectly immortal government that takes a strictly instrumental view of your population then the value of the typical 1st

I should point out that if you are a perfectly immortal government that takes a strictly instrumental view of your population then the value of the typical 1st world citizen's life is going to be about $5 million. The government can't extract all that value from its soldiers but it should still consider their long term productivity forgone by them dying as much the cost of training them if you're being smart. Of course that only enhances your point.