The true statement about African American soldiers during the Civil War is: They were often given hard, menial jobs instead of seeing combat.
While African American soldiers did eventually get the opportunity to fight and serve in combat roles, especially as the war progressed, initially many were assigned to support roles and labor positions. Enlistment numbers increased over time, particularly after the Emancipation Proclamation, but they did not enlist in large numbers at the very start of the war. Additionally, African American soldiers were predominantly commanded by white officers, not by African American officers.