Answer:
By creating similar confederate infantries consisting of only Black soldiers
Explanation:
"The 54th" refers to a group of infantry that from Massachusetts that consisted of only black soldiers during the civil war. The 54th Infantry regiment fought for the Union with the goal to help the Union abolish slavery in Southern States.
The confederacy saw this and formed their own black-only infantries. But for the confederate army, they were just slave-soldiers. These infantries have no right to refuse their milltuiary appointment since many of them were executed if they dare to refuse.