How did emancipation make military sense?

This was a wartime tactic that ensured the Union could draw on the manpower of thousands of free Black Americans.

Emancipation during the Civil War made military sense for the Union for several reasons. Firstly, it helped to deprive the Confederacy of valuable resources by freeing enslaved individuals who were contributing to the Southern war effort. Emancipation also served as a way to undermine the Confederacy's economy and labor force, weakening their ability to sustain the war. Additionally, by allowing African Americans to enlist in the Union army, it bolstered the Union forces with more manpower, which was crucial in the later stages of the war. Overall, the strategic impact of emancipation played a significant role in the Union's military success during the Civil War.