Second Interwar Period & World War 3 (Reversed World Wars)

Second Interwar Period (1955-1962)
As World War 2 came to a close the world hoped to keep another World War from happening, having seen the horrors of 2 World Wars already and formed the UN. This could not be however, as one last World War emerged from the ashes of the prior ones. On June 5th, 1957 a group of Communists in Russia known as the Bolsheviks organized the largest organized revolt in human history (over 75% of Russians) which gave them power. The Bolsheviks threw out the Tsar, forcing him to Abdicate in front of the public. The people had grown tired of how slowly the Tsar was modernizing the nation and how over Arrogant he was, making claims such as "Russia is the most powerful nation in history", which the people knew was far from true. The people and even the military raised up and in just hours Russia went from what was essentially a Constitutional Monarchy, to a hardline Communist Dictatorship. The new nation was named the Communist State of Russia (CSR). The CSR controlled what was in OTL the Soviet Union and also Mongolia was part of the CSR. The Bolsheviks modernized Russia at an insane rate and Russia soon had over 2.5 million troops (most massed at Germany's eastern border).

World War 3
The Bolsheviks gave Germany one option; surrender the Kaliningrad Oblast region or face annihilation. When Germany arrogantly replied neither the Communist State declared war, thus beginning World War 3. Every nation in the world was effectively against one enemy, the Communist State. European troops worked together to try futilely to keep the Communists back, but they just couldn't do it; Europe had not prepared for another war because of the hope there would not be another war. Eventually, after losing nearly half a million men, the Europeans managed to hold back (although the Communists did manage to slowly inch their way closer to Berlin) the Communists just over 100 miles from Berlin. Mad amounts of death and destruction occurred as the Communists refused to stop, finally breaking through Allied lines and encircling over 100,000 men trapped in Berlin. These men bravely fought for months until Berlin finally caved to the Communists, who created the Communist (although in effect more Socialist than Communist) puppet state of East Germany, which acted mostly as a buffer state between the Communists and Democratic nations. East German troops and Russian troops worked together in pushing further yet, eventually taking more of West Germany which led to the invasion of Denmark and creation of the People's Republic of Denmark. Slowly the Russians and East Germans pushed towards Weimar (the temporary capital of Germany), despite huge Allied resistance. However the unstoppable advance of the Communists was halted just around 15 miles short of Weimar and just about 75 miles from the East German border. Both sides fought bloody battles, both sides made hardly any progress and, in the end, neither side could beat the other. The fighting near Weimar didn't end for nearly a year until the Allies finally made a tiny, yet moral boosting, push towards the East German border. The advance by the Allies was stopped in no time, with the Communists making a second push towards Weimar. One side had to give eventually and the Allies were taking heavier losses, so the Allies made an emergency retreat, leaving Weimar wide open for the Communists. Over 1.5 million Allied troops died trying to hold Weimar, but even with so many troops and even with Blitzkrieg, the Allies just couldn't hold the city without losing all their troops. The ground near Weimar was just obliterated; nothing but craters, turned up dirt and the piles and piles of dead. Weimar itself was converted into effectively a large-scale factory for the Communists to produce even more weapons. The Allies evacuated Germany itself, retreating to Occupied France (who's "in 5 years" independence was put on hold). The Communists expanded East Germany to be all of Germany and named it the People's Republic of Germany (or PRG).