
I have a long background in the service, and have known a lot of guys in the service, in addition to having had a bit of a stint myself ages ago, I told him before he went to basic:
1. Do not fall in love son, you're too young anyway (he was only 18, he went right out of high school).
2. DO NOT, AT ALL, CONSIDER MARRIAGE! IF YOU THINK YOU WANT TO CONSIDER MARRIAGE, REMEMBER THAT THE DIVORCE RATE IS OVER 90%.
No need to swear, my son is my first born
Of course, the offshoot of this is that my son is essentially a male slut

*sigh*