Dari,
How old are you? Here's why I ask. You sound young, or at a minimum, immature.
What you're failing to understand about combat is this. Sometimes combat is the easy part. I haven't seen direct combat action, but I've served as an MP for years. In that time, I've seen dead children, battered women (and men), broken families, houses so filthy that even the pets were sick but there were the kids walking around barefoot kicking dog shit on the floor (we counted 82 piles of dog shit in the quarters that day before I got so pissed off I walked out for fear of shooting the soldier for allowing it to happen), meth addicted families, child pornography cases (nothing worse than seeing a 30+ year old man penetrating at three year old girl), and on and on.
Now, most of that shit just angers me, the two dead kids I've dealt with caused permanent damage. So did the child porn case. Now, maybe you won't be an MP and you won't have to deal with that shit, but you WILL see it in other countries. I firmly believe I can kill a motherfucker that's trying to take me or another soldier out in combat and suffer little ill effect. What I don't think I will be able to deal with is seeing a child dead, or the body parts of a child laying openly in the street. Especially now that I have kids. My brother agrees, he's had two combat tours in Iraq as an Infantryman and the thing he talks about the most is not the insurgents or fighters he blew to shit, but the kids who walked too close to an IED, or had grenades strapped to them and didn't understand why.
So, you go on and rush into something stupid because your father's, father did it, but remember this. They didn't all FIGHT in previous wars. One of my grandfathers died of cancer at age 58 with shrapnel in his back from assaulting a German bunker, the other one broke his leg training for the Normandy landing and spent the rest of his time in the war doing paperwork in England.
Simply put, you're an idiot for leaving a possibly pregnant wife behind to go rushing off into direct combat action for some assinine gesture of "family history" that no one will give two squirts of piss about at the end of the day. Now I'm not saying don't join, by all means, join. I've done it damn near my whole life, having been literally born into the Army. But, choose your career based on some common sense goals given your current situation, otherwise you're just another cliche fucktard trying to prove how big (or small as it were) his dick is out of some sense of insecurity in life.
There I said it, because it needed said.