"The political and military events that gradually turned the Union army into an army of liberation, aided by the Emancipation Proclamation as the predictable next step. How could the war have continued much longer without turning it into a war for emancipation and not merely to preserve the Union? And how could the Union cause have triumphed without the arming of black men? But in truth, Lincoln's decision was a huge break with the past. Shortly before the proclamation was to take effect, Frederick Douglass, who had pushed hard for emancipation, celebrated with these words: "This is scarcely a day for prose. It is a day for poetry and song, a new song." Douglass rightly celebrated the day as a major step towards emancipation, and that is how we recall this crucial turning point, but he also recognized that it was a milestone in the relationship between the federal government and black men, both free and soon to be freed. When the Lincoln administration finally agreed to let black men take up arms against the Confederacy, an important door opened that would be very difficult to close. By arming black men, the Union was acknowledging something about black humanity and specifically about the manhood of these new soldiers. The administration was also implicitly acknowledging that they needed these new recruits to help win the war and restore the Union. Although celebrated as an immense moral step, the Emancipation Proclamation and the subsequent recruitment of soldiers into the regiments of the United States Colored Troops represented decisions born out of explicit military necessity, and they were presented to Northern voters on those terms."