yeah, european countries totally didnt have any colonies.
http://www.blackpresence.co.uk/remembrance-day-black-asian-soldiers-in-ww1/
http://encyclopedia.1914-1918-online.net/article/colonial_military_participation_in_europe_africa
http://www.bbc.co.uk/news/magazine-33329661
google is cool
that's not really addressing his point though
his point was it was inaccurate and a bit silly to have half the German forces in an online game black. You know the same Germany army that spread propaganda to their troops on the front from how "pathetic" it was the French had to depend on colonial "savages" for the defense of france (their words not mine).
Imperial Germany has something like 5 black soldiers that served in Europe at the time and three were musicians in Hussar battalions, from what I've read only one was posted anywhere near the front. This was out of like 10 million mobilized Germans/poles.