The following cartoon is from Harper’s Weekly on August 22, 1865.
This unsigned Harper’s Weekly cartoon honors the service and recognizes the equal manhood of the black and white soldiers who had served the Union cause during the Civil War.
Although black men volunteered to serve in the Union armed forces as soon as the Civil War began, their service was rejected, ostensibly because of a federal law which prohibited blacks from bearing arms in the United States military. (Although the law was enacted in 1792, blacks had served during the War of 1812.)
Both the eagerness of black volunteers and the refusal to enlist them were based significantly on the assumption that their military service would foster emancipation of the slaves.
At the beginning of the Civil War, President Abraham Lincoln realized the dire necessity of keeping the border states (slave states which did not secede) in the Union, and so he initially rejected attempts to arm blacks or emancipate slaves.
That situation had changed by the summer of 1862 as the number of white volunteers dwindled, the number of contrabands (escaped slaves under Union military protection) rose and the border states became more secure for the Union.
In July 1862, Congress authorized the use of black men in the Union military, and President Lincoln informed his cabinet that he would soon proclaim the emancipation of slaves in Confederate territory.
The use of black servicemen, like the Emancipation Proclamation (January 1, 1863), stirred considerable opposition throughout the Union states because of racial prejudice.
Black servicemen were segregated from whites in special “colored” units under the leadership of white officers, such as Colonel Robert Gould Shaw of the 54th Massachusetts Colored Infantry. (The United States armed forces were not desegregated until the 1950s.)