Then I saw when the Lamb broke one of the seven seals and I heard one of the four living creatures saying as with a voice of thunder, “Come.” I looked, and behold, a white horse, and he who sat on it had a bow; and a crown was given to him, and he went out conquering and to conquer.
The Japanese War was soon looking like little more than a slightly more mobile version of World War I. While more American divisions were being sent to Japan preparing and shipping them took time not to mention Congress wasn't willing to write a blank check on military expansion and with conscription disbanded new recruits had to be volunteers. This made the American led allies pick and choose where they made new offensives. That wasn't the same for Korea and North Japan who made wave attack after wave attack. While this caused them massive amounts of casualties and many attacks would fail there were so many of them that some would break through. These breakthroughs wouldn't make much headway though. By the fall the front was a line roughly from just north of Mito to Joetsu with it rarely ever moving more than a few miles one way or the other.
Despite Russia's protests and threats the Coalition was, not only allowing Germany to rearm, but helping them as well. Trying to show Russia's muscles and try get the Coalition Beria ordered two more Armies of reservist called up and sent to western Poland and Czechia as a show of force. This in turn saw the Coalition increase their presence in Germany whereas by September Britain had 100,000 troops, Italy had 100,000 troops, and France had 175,000. along with these there was also around 45,000 men in the international group made up of units from the rest of the Coalition. This only made things grow worse and soon each side was doing military maneuvers just over the border from one another and there was almost no contact between the East and the West.
While the Coalition was increasing their manpower in Europe Russia still outnumbered them more than 5-1. This lead the Coalition call up some their reserves to make that number gap smaller. Russia saw this as a mobilization and a direct threat made towards them and demanded that the Coalition immediately stop while also calling up more reserves in Russia. Heads of the Coalition stated that they would stop the reserves call ups and withdraw foreign troops from Germany if Russia did the same and pulled out of eastern Europe and from western Poland to create a safe buffer between the two sides. This is something Beria flat out refused to do and things deteriorated further.
At 4am on September 21,1950 the world seemed to end. While all Coalition nations grabbed up as many German scientists and German tech as they could during the war, it was only a fraction of the amount that Russia acquired. At 4am Russian bombers and both land and ship based ballistic missiles hit military bases and the dozens of the coalitions major cities across every European based nation in the Coalition. These bombs and missiles were loaded with a new chemical agent called V gas, a nerve agent that was so toxic it could kill just by touching skin. 150,000-250,000 soldiers and civilian died in the initial gas attack with as many more suffering serious, sometimes eventually fatal, injuries. Along with the V attack Russian naval forces launched a massive attack on Britain's fleet at Scapa Flow. Three Russian fleet carriers, three escort carriers, six converted ballistic missile carriers, six battleships, 30 submarines and dozens of cruisers and destroyers attacked with everything they had. This would be the worst British naval defeat in its history. All of its six carriers were sunk or disabled, the same with the eight battleships, four of its six battlecruisers, and eleven other ships at the loss for Russia of only 87 aircraft, 3 submarines, and one missile carrier which was due to a missile explosion on the pad.
Four hours after the attack began, and while V filled missiles were still flying into Coalition cities, 2.75 million Russian troops along with 3 million allied troops under their command invaded the Coalition with more troops on the way. To cut down supplies from the Americas Russia also launched an amphibious invasion of Iceland which would fall in less than 24 hours. Soon hundreds of aircraft were arriving on the island along with tankers and cargo ships offloading more men and naval supplies as over 100 submarines and nearly as many surface ships moved to call Iceland their home for the wars duration.