
The physical and verbal abuse used by drill instructors is intended to break the spirit - and often does.
As a Vietnam and Kuwait era veteran, I can tell you, the military messes with your mind. I saw perfectly agreeable young men enter the military and return just months later much less agreeable (less able to cooperate with others, sense and feel for others, get along with family and friends, etc.).
An article in Psychological Science, a journal of the Association for Psychological Science by some pretty smart scientists confirms that military conscripts in the German Army were less agreeable upon exit from service than they were going in, and they were less agreeable than their counterparts who did not endure military service.
Yes, it’s the German army, but my guess is that their army is much the same as the one I endured here in the USA. Some say military Basic Training is like a rite of passage, and maybe so. The intent now as it has been for hundreds of years is to break the spirit so that people can become more responsive to authority. Four or more years of military service, even without combat, is bound to leave its mark on an individual.
There is nothing inherently wrong with being less agreeable. Many people would say that very successful business types are pretty disagreeable – as are many bureaucrats, law enforcement officials, and TSA agents.
Still, I think it’s food for thought. I tend to like agreeable people more than I do disagreeable people. But that’s just me.
(source: Association for Psychological Science. “Does The Military Make The Man Or Does The Man Make The Military?.” Medical News Today. MediLexicon, Intl., 27 Jan. 2012. Web.)