Note: This article has been corrected. They called themselves the “Black Rattlers” and the French dubbed them “Men of Bronze,” but the Army now officially recognizes a historic Harlem unit by what the enemy called them in World War I — the “Hellfighters.” The “Harlem Hellfighters” is now the official special designation for the 369th Sustainment Brigade, the New York National Guard said Friday. The unit traces its lineage to the all-Black 369th Infantry Regiment, which earned the moniker over a century ago in fierce fighting that’s been credited with helping to break down racial barriers. The regiment was the first unit of the American Expeditionary Force in World War I that allowed Blacks to serve.