Russia didn’t fight the Germans in North Africa, Sicily or the Italian mainland. Russia didn’t posses a navy that ended the U boat threat in the North Atlantic as the Royal Navy and the US Navy did. Russia didn’t posses a strategic airforce that pounded German cities and war industries to dust. Russia didn’t fight the Japanese all through the islands of the Pacific. Russia didn’t posses a navy that put the Imperial Japanese Navy at the bottom of the Pacific. Russia didn’t posses a strategic air force that fire bombed Japanese cities as did the US. Russia wasn’t supplying it’s allies with arms, America did and Russia sure as hell didn’t develop and deploy two atomic bombs that bought Japan to the surrender table.
Russia did sign a non-aggression pact with Hitler that allowed them to snap up the Baltic States. Russia did invade Poland two weeks after Germany did. Russia did invade Finland and Old Joe did sit fat and sassy in the Kremlin every night during the winter of 1940/41 while the Luftwaffe was pounding London into dust. The in June of 1941 when Hitler decided he didn’t need a partner anymore suddenly Stalin was screaming for help from the West. And from the minute the US entered the war it was “You got to open up a second front, you have to do that NOW! Screw the Russians.
Also most of the Russian casualties are the result of Stalin’s leadership. He did not care how many died.
Another little known fact: Had the invasion of Japan occured, the Soviets would have landed in the Kuriles and Hokkaido — because the US Navy would have delivered them there.