In Sniper Elite V2 for the PC, PS3, and Xbox 360, you can incapacitate enemies to the ground which will make them scream for help and attract more enemies to come and help them, allowing you to take them down as well.
The most reliable way to incapacitate an enemy seems to hit them in the lower stomach, around the belly button. This target grows smaller on the harder difficulties however, making it very difficult to incapacitate enemies on the hardest difficulties.
