The issues of emancipation and military service were intertwined from the onset of the Civil War. News from Fort Sumter set off a rush by free black men to enlist in U.S. military units. They were turned away, however, because a Federal law dating from 1792 barred Negroes from bearing arms for the U.S. army (although they had served in the American Revolution and in the War of 1812). In Boston disappointed would-be volunteers met and passed a resolution requesting that the Government modify its laws to permit their enlistment.
The Lincoln administration wrestled with the idea of authorizing the recruitment of black troops, concerned that such a move would prompt the border states to secede. When Gen. John C. Frémont (photo citation: 111-B-3756) in Missouri and Gen. David Hunter (photo citation: 111-B-3580) in South Carolina issued proclamations that emancipated slaves in their military regions and permitted them to enlist, their superiors sternly revoked their orders. By mid-1862, however, the escalating number of former slaves (contrabands), the declining number of white volunteers, and the increasingly pressing personnel needs of the Union Army pushed the Government into reconsidering the ban.
They have but this tends to be riskier if you are doing the same thing, this is why the average person follows the rules/systemwhich is a safer option. The people who bent the rules are also exceptions while the norm isn't. (I personally like to bend rules)
