The man wanted to segergate the armed forces and was a racist jerk who would have set back race relations by at least a generation.
If he sucedes it means bad things for every one, world war 1 was the war where whites, blacks, asians, latinos, what ever your ethnicity what ever your religion you all fought, bleed, and died in the same trenches.
That experience is what helped kill Jim crow during the 1920s, 1930s.
If he had won, its likely that segergation would have lasted much longer possibly to modern day Its good for the country that he lost.