During WW2 which allied nations suffered the most military deaths?

The country that had the most losses in World War 2 was The Soviet Union with a loss of more than 20 million people. More than 13% of their population. Personally, I don't understand what the big deal is with the Holocaust, with the extremination of more than 6million Jewish people. I'm not racist, I have alot of Jewish friends. But still, Germany should be paying Russia, Ukraine, Belarus, and all the other countries that were formley part of the Soviet Union, not Israel.