Iron Storm

This cruel war began in August 1914. Now it is March 1964, and believe it or not, it is still being fought. Western and American troops are fighting the armies of a modern Genghis Khan, who has already put a bloody end to the Bolshevik Revolution. He plans to establish a Russo-Mongolian empire stretching from the Atlantic to Vladivostok. Some aspects of this world seem to correspond to 1914, such as the trenches and bunkers, but you'll also find that several decades of concerted war effort have led to the development of some very modern types of weapons, transportation, and other technologies.