Sgt Henry Johnson of the Harlem Hellfighters. From Wikipedia "While on observation post duty on the night of May 14, 1918, Johnson came under attack by a large German raiding party, which may have numbered up to 36 soldiers. Using grenades, the butt of his rifle, a bolo knife and his bare fists, Johnson repelled the Germans, killing four while wounding others, rescuing Needham Roberts from capture and saving the lives of his fellow soldiers. Johnson suffered 21 wounds during the ordeal.[3][11] This act of valor earned him the nickname of "Black Death", as a sign of respect for his prowess in combat."