what kinds of noncombat duties did African Americans do for the union?

During the American Civil War, African Americans performed a range of noncombat duties for the Union army, including working as laborers, cooks, teamsters, and hospital attendants. They also served as scouts and guides, providing valuable intelligence for the Union army. In addition, some African Americans were also involved in training Union soldiers and served as recruiters for the newly formed United States Colored Troops. Overall, African Americans played a crucial role in the Union army's logistics and support operations during the American Civil War.