And Here is the Art I was Learning

I spent about two and half years learning Krav Maga. Here is a good description of if from The Ultima, where I trained. Check them out here.

Krav Maga was developed for use in the street. Therefore there are no rules. When an individual is attacked in the street there is no way to know how many opponents or weapons you might encounter, therefore Krav Maga training is based on a system without rules. In an assault situation an individual has the right to use whatever techniques necessary to defend themselves. For this reason there are no competitive tournaments or katas in Krav Maga. The techniques practiced in the style must be in terms of actual defense situations. In fact, students of Krav Maga are taught the vulnerable points on the human body and are encouraged to use this knowledge to fend off an attack.

You can also watch a little about it on Human Weapon.