I'm not sure how the military operates in all parts of the world, but I can give you a little insight into the United States military. First with a stat, that less than 1% of the population joins.

The rest you'll just have to take my word for as someone who served in the Marines for four years.

Most join because they are poverty stricken, and are generally good young men and women who do not want to go to war. They are hopeful to make it through an enlistment and get a GI bill to pay for college and be done with it. The psychopaths in the military are few and far between but can generally be seen above the ranks of E-5. (because they like it and stay enlisted, the rest get financially burdened with families and know nothing else to provide.)

The brainwashing mechanism used on the military incites an intense awareness of potential threats and makes it extremely difficult for many to function normally in society and must undergo all kinds of behavioral re-modification therapy once in society. (with low success rates)

Addiction, homeless, and suicide rates are through the roof with this less than 1%, with virtually no help from the government. Another aspect (minus the suicide but plenty of failed attempts) which I also experienced and saw with many other veterans.

Four trips to veterans rehabilitation centers, I met many men who are no longer with us today. Many of them opiate addicts because of medications the VA prescribed them, and then took them off of with no proper maintenance, so they turned to heroin.

Disability claims are null and void if not submitted within 1 year of discharge, negating a psychological phenomenon recognized by the government behavioral therapy institutions called repression, which occurs from trauma. I found this out after repressed memories came back years later and I filed a claim. (and was denied on that 1 year limitation.)

It's cool that they don't help out the veterans with much assistance though, because then they can keep the money available for all of the college benefits that the majority of them will never use due to the reasons listed above.

Check this video out to see how much the US cares about their veterans.

BTW, it's only my opinion, but I think we're all slaves in the pyramidal power structure we live in. The dollar bill even has a pyramid on it, and they don't ever talk about what that means during our indoctrination they call school.