Complex sentence: After Pearl Harbor was bombed, they toured with the first Black USO unit during World War II. Hayes recalled the racial prejudice she experienced on these tours in the South; the performers received their meals out the back doors of the mess halls.
Split into simpler sentences: After Pearl Harbor was bombed, they toured with the first Black USO unit during World War II. Hayes recalled the racial prejudice she experienced on these tours in the South. During their tours in the south, they received their meals out the back doors of the mess halls.