When Heroes are "Criminals"

Do you know what makes me sick? When I read about the men and women in service to our nation, placing their lives on the line in the interest of something greater than themselves--only to come home and be charged as murderers or criminals. Whether it is our policemen, border agents, or members of our nation's armed forces, these individuals are given an enormous responsiblility; these men and women work in the line of fire, placing themselves in danger to fulfill their responsibilities. To expect perfection is too much.
I recognize that there are some who abuse the power entrusted to them, and there are those who murder. But when the incident is even debatable... please give the soldier the benefit of the doubt. I seriously question any of our abilities to judge a soldier under fire, and condemn his or her actions without experiencing the feeling of waking up every day wondering if it would be your last, peering around every corner for the explosion that would end your life.
Our armed forces, law enforcement, etc... personnel are heroes. Yes, punish war crimes. But since when are soldiers under fire in a combat zone subject to prosecution, and since when do illegal immigrants have the rights of an American citizen??!!