This only proves that war is not natural, just an evil and selfish stunt created through man. Just utter madness.
War should only be done to protect life. The point of the wars led by americans in the middle east is to destroy the islamist, terrorist threat, radical islam, to implement outposts right in the middle of the muslim world and to push nearby societies to choose "democracy". And to secure access to cheaper oil. There are several main ideologies fighting each others in the world, but ultimately they ll all form a global, unique ideology/philosophy/faith. The point is to christianize the whole planet, or else it would become muslim or communist.
Back on subject,the fact is some people can deal with killing, seeing death, and others cant. Mostly because they dont have faith. Those with faith can justify their actions and fight. Those who dont believe in what they do will struggle to justify it afterwards, thinking it is or was absurd. The us army is so big a lot of soldiers arent really ready for what they re going to see and feel, even if they pass the recruitment tests. Also having a weak family structure, being uneducated, having no faith doesnt help either. Most of them kill themselves because the army is their family, and they have nothing else to do in life, they are useless when they re not soldiers. Some people can explain, justify to themselves, why they see what they re seeing, or do what they do. It's a lot easier to wage a war when you have faith, it acts as a shield. People who have no faith have lot more troubles dealing with what they see or do, as they dont understand the meaning of life. They re immature. Most come from shity families. Faith is required to do genuine good and deal with evil without being destroyed by it.
It's very very complicated cause tons of factors are at work, but let's just say that a lot of people wear army uniforms but arent soldiers.
You have guys destroyed by their war experience, and others who are strenghtened by it, even when joing the civilian society once they re done with the army. Lot of soldiers survived ww2 and became some of the most contributing to society individuals this last half century.
I guess good people become good soldiers and survive wars, while bad, evil, unfaithful people are destroyed by it.