This comment will be controversial, especially for North Americans and Western Europeans. I ask you to read it and think about it a moment before reacting, and comment if you disagree. I believe what I'm about to say is true, and I'm not trying to get a rise out of people - I want to fix some problems with society. I feel for the author. I also moved around a lot as a kid. No, wasn't a military family. Just coinciden…
"... But son, as soon as someone puts their hands on you, they've crossed a line. Fuck them up. It's the only thing these vicious freaks understand. They're wild animals. They make violence on you, you need to show them that you're the stronger, bigger animal. When someone attacks you maliciously for no reason, you need to impose your will on them. ..." And the first girl who uses an indirect asymmetric attack? This…
If you are going the way of fighting, the advise is simple: keep the fight as short as possible, by eliminating the opponents ability to fight on the first possible occasion. In one situation, a square hit in the face may remove all their resolve to continue fighting. In another situation, you may need to do serious damage. Whatever the situation: don't dance around and do what is required to prevent yourself from getting hurt.
(Luckily I've never been in an actual fight, but I regularly insist my jiu-jitsu training partners behave like they would in a real fight for a bit, instead of cooperating with the exercise. That always puts my ability to actually fight in a humbling perspective. What I learn from that is what you will hear others say: keep it simple (complex techniques fail much more often), hurt them as soon as possible (pain distracts people immensely) and keep it short (the longer the fight takes, the more chance for you to make a mistake, for him to grab a weapon, for someone to join in, etc.). A hard punch on the nose is the best start of any fight.)