What was the main use of the African American troops the US sent to Europe during World War 1?

The main use of African American troops during World War I was to serve in support roles and combat units, although they often faced discrimination and were initially relegated to non-combat duties. The most notable unit was the Harlem Hellfighters, who fought valiantly in combat and earned high honors for their bravery. Their contributions helped challenge prevailing racial stereotypes and laid the groundwork for the civil rights advancements that followed in the years after the war. Despite their sacrifices, African American soldiers faced significant racial prejudice both in the military and upon returning home.