Seeing as there are already Squad players here, I wonder if there are any OG PR players out here.
If you don't know what PR is it's basically a stand-alone Battlefield 2 mod with a more realistic tactical shooter approach. It is what Squad is based on and it sets the foundation for many of what you see in Squad. Here is a Devcast video from the most recent major update to the game.
https://www.youtube.com/watch?v=z6CWiXfEINA