Why was General Order 143 important during the civil war?

General Order 143, issued by the U.S. War Department in May 1863, established the United States Colored Troops (USCT), allowing Black soldiers to serve in the Union Army. This order was significant as it marked a crucial step toward the inclusion of African Americans in the military and acknowledged their contributions to the war effort. It not only bolstered Union forces but also represented a shift in societal attitudes towards race and equality during the Civil War era. The service of Black soldiers in the USCT played a vital role in the eventual abolition of slavery and the advancement of civil rights.