Answer :
War is a highly nasty and terrible subject, which is why this part of the book works. Even troops who survive a battle don't want to experience another one since living after a war is depressing.
Families of those killed in combat suffer from bereavement and hunger. unemployment as a result of damage in both countries. The shame of killing more people without any blame affects soldiers.
About soldiers
One of any nation's most valuable resources is its military. They are the nation's defenders and will stop at nothing to keep its people safe. They are also a very selfless group who prioritise the needs of the nation over their own. One of the hardest jobs in the world is being a soldier.
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