Just for my info, how can you make sure you can’t be shot? This is very important to me and I am sure armies all around the world would pay big bucks for this. You could be a future billionaire.
It's not that complicated. Imagine you're an infantryman in a defensive position. The first thing to understand is the difference between cover and concealment. Cover will protect you from direct fire. Concealment won't. Overhead cover can protect you from indirect fire.