America's Army
The players on each team see themselves as American soldiers with American weapons, such as the M16A2. Their opponents look like non-uniformed people with Eastern bloc weapons, like the AK-47 (the counterpart of the M16A2 in the game). In training maps the only distinguishing features are the players' uniforms. The development team did this to make the game realistic for players on both sides. They allowed everyone to play on the side of the American forces. They also avoided the problem of asking players to kill American soldiers.