Marine Corps ranks are broken down into three levels -- junior enlisted, non-commissioned officers and staff non-commissioned officers. As a Marine moves up the ladder, his or her responsibility and contribution to the mission increases. This also means that those who have earned higher rank have a special responsibility to look out for the welfare of their subordinates.
<em>The Constitution of the United States established America's national government and fundamental laws, and guaranteed certain basic rights for its citizens.</em>
