“Separate but equal” was ruled unconstitutional inside the education system. It reversed the 1896 rule of Plessy v. Ferguson. This was only the beginning of the fight for Black civil rights.
The best way to integrate African-American soldiers with whites would be to integrate all the units at once to push the different races to socialize. (I recommend rewording and trying to lengthen but this is the best I got based on my research!)
The answer is 1871....
I know this for a fact!!!......