American fighters

New York's famous 369th regiment arrives home from France, 1919.
Nicknamed the Harlem Hellfighters, the 369th Regiment was the first all-black regiment to fight in World War I. They arrived in France in 1918 and fought on the front lines for six months, longer than any other American unit during the war. Source: ca. 1919, Still Picture Records Section, Special Media Archives Services Division (NWCS-S), National Archives at College Park, MD.

http://www.amistadresource.org/plantation_to_ghetto/archives/image_archive.html

Are you surprised to see black men? Not only did they come from the US there were Black African men from the colonies fighting in the trenches.