This is more of a general collection of soldiers with various equipment, including those not included in a rifle platoon. This could be used for elements of the 92nd Infantry Division, 56th Armored Infantry Battalion, 761st Tank Battalion, 614th Tank Destroyer Battalion, 413th Infantry Regiment
"Buffalo Soldiers" are a general term for black soldiers in the US military, which until 1948 was segregated from white units and had white commissioned officers. A total of seven soldiers would receive Congressional Medals of Honor in 1997 by President Bill Clinton.