Why is Harlem hell fighters important in WWI

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Explanation:

The Harlem Hellfighters were an African-American infantry unit in WWI who spent more time in combat than any other American unit. Despite their courage, sacrifice and dedication to their country, they returned home to face racism and segregation from their fellow countrymen.

The Hellfighters helped bring jazz to France, then battled Germany longer than almost any other American doughboys.

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