In response to the Confederate forces' egregious and heinous acts against black Union soldiers, President Abraham Lincoln issued a decisive "eye-for-eye" mandate on 30 July 1863.
This stern directive decreed that for every black prisoner executed by the rebels, a Confederate prisoner would face the same fate.
This order underscored Lincoln's unwavering commitment to justice and equality, as he sought to deter such brutalities and uphold the sanctity of all Union soldiers, irrespective of race.