Warhammer 40,000: Chess is Warhammer 40k. Chess. OK.
In the grim darkness of the 41st millennium there is only checkmate.
When the hell are we going to get an Imperial Guard FPS? Take everything you've seen in the WW2 Medal of Honors, the Modern Call of Dutys, mash it all together, sprinkle some 40K tech on it and call it a day.