Take a look at part of the final exercise we run airsofters through on the Just Cause Airsoft and Ambush Adventures Tactical Training Days.
A point to note:
The drills the guys are taught on this training day are real tactics and real methodology used from real experience. They are NOT taught this stuff to make them capable of doing it for real. They are taught this stuff out of their own interest, for fun, and to improve their airsoft game.
The drills are real… the purpose is not.