Mongol Invasion of Russia

The Mongol Invasion of Russia was, as the name suggests, an invasion of Russia by the Mongol Khanate.

The Soviet Union initially crumbled under the rapid Mongol invasion, which led to a European coalition being assembled, which had the following members, ranked in order of their contribution: The coalition also had some indirect contributors such as the Nordic Union, Hispania and United Provinces of the Netherlands who gave aid in the form of supplies and productive capacity.
 * Roman Empire
 * Polish-Lithuanian Commonwealth
 * Germanic Reich
 * The Papal States, Naples and Piedmont of the Italian League
 * France
 * Kingdom of Albion

The Mongol Khanate annihilated a large coalition force at Saratov, pushing almost all the way to Moscow before being halted and pushed back. The fighting bogged down in Kazakhstan until the coalition made a decisive breakthrough in February of 2133 which eventually led them to sue for peace in October.