Final answer:
The Harlem Hellfighters, or the 369th Infantry Regiment, were renowned for their service and bravery during World War I.
Step-by-step explanation:
The 369th Infantry Regiment, or "Harlem Hellfighters," made significant contributions during World War I. One of their notable accomplishments was their remarkable service in the trenches, where they spent a total of 191 days in combat, longer than any other American unit. Despite facing discrimination and segregation, these African American soldiers demonstrated bravery and valor, receiving numerous awards and commendations.
Learn more about The Harlem Hellfighters' accomplishments during WWI