i didnt serve but dad and 4 uncles and both grandpas and many of my cool old dude neighbors served. I gather i makes you more mature, cautious, deliberate, patriotic, patient. Ohh and it makes you tell lots of stories to little kids that complain. Usually start out something like : shut up you dont know what cold is. You dont know what hot is. You ever eat out of a trash can like a little vietnamese orphan ??? Ok then eat your dinner.
Makes ya tell LOTS of tough luck stories.