During the Civil War, African American military units

a. were usually led by white officers.

b. chose their own officers to lead them.

c. formed in both the North and the South.

d. included white Confederate soldiers.

The answer is A. were usually led by white officers. during the early stages of the civil war, black soldiers were segregated and assigned to serve in all black regiments under white officers. Although the valor and courage shown on the battlefield mostly ended the segregation of black troops towards the end of the war, white men still held the officer positions.