This is a bit old but I will just add that I don't think that would be adequate. I know of several Congress creatures and their families who deliberately, intentionally, willingly and with a political plan in mind to send their children to "war". Of course it is usually in some specialized capacity where they are safe and also generate some prestige, e.g., Air Force, intel, etc. for their inevitable political career.
Sadly, they care less about their own children usually than if you made it far simpler, simply make the full cost of any war totally and solely payable by the ruling/upper classes through both immense taxation on their income, i.e., 90% and a wealth tax of 10%, total forfeiture of all assets if they is any attempt to hidden them and are not reported, and a bounty of 50% for discovery of any unreported assets.
Now THAT would end all wars everywhere, except it would likely also cause the money to try to escape to a place that does not have such policies and use that as a base of operations to build/raise a force of subversion, infiltration, corruption, etc.
Frankly, people really have very little understanding of the "shape" of what they are up against. It's often dismissed and I don't even think the people who call it "spiritual warfare" really understand it either, but it is essentially a power, a force that has been often described, but never defined or identified properly that is essentially an abstraction, a graph, more an amorphous fluid dynamic than a material thing. If you know anyone that is an extremely manipulative narcissist and pathological and deliberate, psychopathic liar, you have come face to face with the constantly shifting, ducking, weaving, and orchestrating nature of the system that so many are hard pressed to understand because it is not a line of men on a battlefield, it is not a missile, it is not even "money" it is data, digital transactions of "currency", information as currency... the life blood of manipulation, abuse, and evil.