About how many of the unions 180,000 african american volunteers lost their lives during the civil war?

About 70,000 of the union's 180,000 African American volunteers lost their lives during the war.

African-Americans served in the Civil War on both the Union and Confederate side. In the Union army, over 179,000 African American men served in over 160 units, as well as more serving in the Navy and in support positions.  

In the Confederacy, African-Americans were still slaves and 68,178 Union colored soldiers were killed or wounded during the Civil War.

Explanation:

which statement best describes the relationship between the fourteenth amendment and the african american civil rights movement?