In a way he is correct. Infantrymen are not trained to be police officers in any way. Logically thinking it just makes more sense to use the people best trained to do the job. Reality, however keeps that from happening. The Army has a total of 7 infantry divisions (roughly 15,000 people per division). I am not positive but I would say that there are not even enough total MP's to make up one division. There simply are not enough MP's to do the job. Thus people like our good friend INFX end up picking up the slack.