How were African Americans in World War 2 treated differently than white men?

They didn't fare well. Discrimination was through out the services and they weren't allow to do many things. The one group that comes to mind is the Tuskegee airmen in WW2. They formed 332nd Fighter Group and the 477th Bombardment Group of the Army Air Force. Their nickname was Red Tails. Although they trained with the North American B-25 Mitchell bombers they never saw combat. These men were the first African American military aviators in the United States armed forces. During the war black Americans were subject to Jim Crow laws, were segregated in the military.