The Harlem Hellfighters #1

When black soldiers join the American army for World War I they are segregated and treated with all sorts of indignities, including relegation to service roles. When the 369th Regiment is detached to the French army they receive combat training, combat roles, and French equipment. Despite (or because of) their successes, the American army demands that the French stop giving them praise and medals, and insists that the French adopt American-style segregation. Under French command they fight more days in combat than any other American unit, and reach the Rhine before any other Allied unit.