So from my understanding of urban warfare you would have direct line of sight of the target, and that distance can vary from very close to over a 1000 meters.

So from my understanding of urban warfare you would have direct line of sight of the target, and that distance can vary from very close to over a 1000 meters. It may sound like a long way, but in the grand scheme of things this is like looking down a few blocks, if you are on just the 2nd-4th floor of a building you will realize how far you can actually see.